Skip to main content
All Plants
Abelia
×
grandiflora
(Glossy Abelia)
Abelia
×
grandiflora
'Edward Goucher'
(Edward Goucher abela)
Abelia
×
grandiflora
'Kaleidoscope'
(Kaleidoscope Abelia)
Abelia
grandiflora
'Kaleidoscope'
(Kaleidoscope Glossy Abelia)
Abelia
×
grandiflora
'Sunrise'
(Sunrise Glossy Abelia)
Abelia
spp.
(Abelias)
Abeliophyllum
distichum
(White Forsythia)
Abeliophyllum
spp.
(White Forsythia)
Abies
amabilis
(Pacific Silver Fir)
Abies
balsamea
(Balsam Fir)
Abies
balsamea
'Nana'
(Dwarf Balsam Fir)
Abies
borisii-regis
(Bulgarian Fir)
Abies
concolor
(white fir)
Abies
delavayi
(Delavay Fir)
Abies
fraseri
(Fraser Fir)
Abies
grandis
(grand fir)
Abies
koreana
(Korean fir)
Abies
koreana
'Kohout'
s
Ice
Breaker'
(Kohout's ice breaker fir)
Abies
koreana
'Silberlocke'
(Silberlocke Korean Fir)
Abies
lasiocarpa
(alpine fir)
Abies
magnifica
(California Red Fir)
Abies
numidica
(Algerian Fir)
Abies
pinsapo
(Spanish fir)
Abies
pinsapo
'Glauca'
(Blue Spanish Fir)
Abies
procera
(Noble Fir)
Abies
procera
'Glauca'
(Blue Noble Fir)
Abies
spp.
(firs)
Abronia
latifolia
(Yellow Sand Verbena)
Abronia
spp.
(Sand Verbena)
Abronia
umbellata
(Pink Sand Verbena)
Abronia
villosa
(desert sand verbena)
Abrus
precatorius
(rosary pea)
Abrus
spp.
(Rosary Pea)
Abutilon
fruticosum
(sweet Indian Mallow)
Abutilon
spp.
(Indian mallows)
Abutilon
theophrasti
(velvetleaf)
Acacia
acinacea
(Round-leaf Wattle)
Acacia
baileyana
(Cootamundra wattle)
Acacia
brownii
(heath wattle)
Acacia
complanata
(flat-stemmed wattle)
Acacia
dealbata
(Silver wattle)
Acacia
decurrens
(Sydney green wattle)
Acacia
disparrima
(Southern Salwood)
Acacia
falcata
(sickle wattle)
Acacia
fimbriata
(Brisbane wattle)
Acacia
floribunda
(Weeping Acacia)
Acacia
genistifolia
(Spreading Wattle)
Acacia
gunnii
(ploughshare wattle)
Acacia
implexa
(Lightwood)
Acacia
irrorata
(green wattle)
Acacia
iteaphylla
(Flinders Range Wattle)
Acacia
leiocalyx
(black wattle)
Acacia
ligulata
(Dune Wattle)
Acacia
linifolia
(Flax-leaved Wattle)
Acacia
longifolia
(Longleaf Wattle)
Acacia
maidenii
(Maiden's Wattle)
Acacia
mearnsii
(black wattle)
Acacia
melanoxylon
(blackwood)
Acacia
mucronata
(Variable sallow wattle)
Acacia
myrtifolia
(Myrtle Wattle)
Acacia
oxycedrus
(Spike Wattle)
Acacia
paradoxa
(Kangaroo thorn)
Acacia
parramattensis
(Parramatta Green Wattle)
Acacia
podalyriifolia
(Queensland silver wattle)
Acacia
pulchella
(Prickly Moses)
Acacia
pycnantha
(Golden Wattle)
Acacia
salicina
(Willow Acacia)
Acacia
saligna
(golden wreath wattle)
Acacia
spinescens
(spiny wattle)
Acacia
spp.
(wattles)
Acacia
stenophylla
(Shoestring Acacia)
Acacia
stricta
(Hop wattle)
Acacia
suaveolens
(Sweet Wattle)
Acacia
terminalis
(Sunshine Wattle)
Acacia
ulicifolia
(juniper wattle)
Acacia
verniciflua
(Varnish Wattle)
Acacia
verticillata
(Prickly moses)
Acaena
echinata
(Sheep's Burr)
Acaena
novae-zelandiae
(Biddy-biddy)
Acaena
spp.
(Bidibid)
Acalypha
persimilis
(hornbeam copperleaf)
Acalypha
rhomboidea
(Common Three-seeded Mercury)
Acalypha
spp.
(three-seeded mercuries)
Acanthocereus
spp.
(Barbed-wire Cactus)
Acanthocereus
tetragonus
(Fairy Castle Cactus)
Acanthus
mollis
(bear's breech)
Acanthus
spinosus
(Spiny Bear's Breeches)
Acanthus
spp.
(Acanthus)
Acer
buergerianum
(Trident Maple)
Acer
campestre
(Field Maple)
Acer
capillipes
(Snakebark Maple)
Acer
circinatum
(Vine maple)
Acer
cissifolium
(Ivy-leaved Maple)
Acer
crataegifolium
(Hawthorn-leaved Maple)
Acer
davidii
(snakebark maple)
Acer
floridanum
(southern sugar maple)
Acer
×
freemanii
'Jeffersred'
(Autumn Flame Maple)
Acer
ginnala
(Amur Maple)
Acer
glabrum
(Douglas Maple)
Acer
grandidentatum
(bigtooth maple)
Acer
griseum
(paperbark maple)
Acer
macrophyllum
(bigleaf maple)
Acer
monspessulanum
(Montpellier Maple)
Acer
negundo
(Box Elder)
Acer
nigrum
(black maple)
Acer
palmatum
(Japanese maple)
Acer
palmatum
'Atropurpureum'
(red Japanese maple)
Acer
palmatum
'Bloodgood'
(Bloodgood Japanese Maple)
Acer
palmatum
'Crimson Queen'
(Crimson Queen Japanese Maple Tree)
Acer
palmatum
'Osakazuki'
(Osakazuki Japanese Maple)
Acer
palmatum
'Red Dragon'
(Red Dragon Japanese Maple)
Acer
palmatum
'Sango-kaku'
(Coral Bark Japanese Maple)
Acer
palmatum
'Seiryû'
(Seiryu Japanese Maple)
Acer
palmatum
'Shaina'
(Shaina Japanese Maple)
Acer
palmatum
'Shishigashira'
(Lion's Head Japanese Maple)
Acer
palmatum
var.
dissectum
(laceleaf Japanese maple)
Acer
palmatum
var.
dissectum
'Dissectum Atropurpreum'
(weeping red laceleaf Japanese maple)
Acer
palmatum
'Viridis'
(Viridis Japanese Maple)
Acer
palmatum
'Waterfall'
(Waterfall Japanese Maple Tree)
Acer
palmatum
'Wolff'
(Wolff Japanese Maple)
Acer
pensylvanicum
(striped maple)
Acer
pictum
(Painted Maple)
Acer
platanoides
(Norway maple)
Acer
platanoides
'Crimson King'
(Crimson King maple)
Acer
platanoides
'Royal Red'
(Royal Red Norway Maple Tree)
Acer
pseudoplatanus
(sycamore maple)
Acer
pseudoplatanus
'Atropurpureum'
(Purple Sycamore Maple)
Acer
pseudoplatanus
'Leopoldii'
(Leopoldii Sycamore Maple)
Acer
pseudosieboldianum
(Korean Maple)
Acer
rubrum
(red maple)
Acer
rubrum
'October Glory'
(October Glory Red Maple Tree)
Acer
saccharinum
(silver maple)
Acer
saccharum
(sugar maple)
Acer
saccharum
'Green Mountain'
(Green Mountain Sugar Maple Tree)
Acer
shirasawanum
'Aureum'
(Golden Full Moon Maple)
Acer
shirasawanum
'Autumn Moon'
(Autumn Moon Maple)
Acer
sieboldianum
(Siebold Maple)
Acer
spicatum
(Mountain Maple)
Acer
spp.
(maples)
Acer
tataricum
subsp.
ginnala
(Amur maple)
Acer
tegmentosum
(Manchurian Striped Maple)
Acer
tegmentosum
'Joe Witt'
(Joe Witt Striped Maple)
Acer
triflorum
(Three-flower Maple)
Acer
truncatum
(Shantung Maple)
Achillea
ageratifolia
(Greek Yarrow)
Achillea
filipendulina
(Fern-leaf Yarrow)
Achillea
millefolium
(common yarrow)
Achillea
millefolium
'Cerise Queen'
(Cerise Queen Yarrow)
Achillea
millefolium
'Paprika'
(Paprika Yarrow)
Achillea
×
'Moonshine'
(Moonshine Yarrow)
Achillea
ptarmica
(Sneezewort)
Achillea
spp.
(yarrows)
Achillea
×
'Terracotta'
(Terracotta Yarrow)
Achlys
spp.
(Vanilla Leaf)
Achlys
triphylla
(vanilla-leaf)
Achyrachaena
mollis
(Blow Wives)
Achyrachaena
spp.
(Blow-wives)
Acianthus
caudatus
(Mayfly orchid)
Acianthus
fornicatus
(Pixie Caps)
Acianthus
pusillus
(small mosquito-orchid)
Acianthus
spp.
(Mosquito Orchids)
Acmella
repens
(Oppositeleaf Spotflower)
Acmella
spp.
(spotflowers)
Acmispon
americanus
(Spanish clover)
Acmispon
glaber
(deerweed)
Acmispon
spp.
(deervetch)
Acmispon
strigosus
(strigose lotus)
Aconitum
bicolor
(Bicolor Monkshood)
Aconitum
carmichaelii
(Azure Monkshood)
Aconitum
columbianum
(Columbian Monkshood)
Aconitum
hemsleyanum
(Climbing Monkshood)
Aconitum
napellus
(Common Monkshood)
Aconitum
spp.
(Monkshoods)
Acorus
gramineus
'Ogon'
(Golden Variegated Sweet Flag)
Acorus
spp.
(Sweet Flag)
Acronychia
imperforata
(Beach Acronychia)
Acronychia
laevis
(glossy acronychia)
Acronychia
spp.
(Acronychia)
Acrostichum
danaeifolium
(Giant leather fern)
Acrostichum
spp.
(Leather Fern)
Acrotriche
aggregata
(Ground Berry)
Acrotriche
serrulata
(Honey-pots)
Acrotriche
spp.
(Ground-berry)
Actaea
pachypoda
(White Baneberry)
Actaea
racemosa
(Black Cohosh)
Actaea
rubra
(red baneberry)
Actaea
simplex
'Black Negligee'
(Black Negligee Bugbane)
Actaea
spp.
(baneberries and cohoshes)
Actinidia
deliciosa
(kiwi)
Actinidia
kolomikta
(same)
Actinidia
spp.
(Kiwi Vines)
Actinotus
helianthi
(Flannel Flower)
Actinotus
minor
(Lesser Flannel Flower)
Actinotus
spp.
(Flannel Flowers)
Adelinia
grandis
(Pacific hound's tongue)
Adelinia
spp.
(Pacific Hound's Tongue)
Adenanthos
sericeus
(Woolly Bush)
Adenanthos
spp.
(Woollybush)
Adenanthos
terminalis
(Gland Flower)
Adenium
obesum
(Desert Rose)
Adenium
spp.
(Desert Roses)
Adenocaulon
bicolor
(American trailplant)
Adenocaulon
spp.
(Trail Plant)
Adenostoma
fasciculatum
(chamise)
Adenostoma
spp.
(Chamise)
Adesmia
spp.
Adiantum
(Maidenhair Fern)
Adiantum
aethiopicum
(common maidenhair fern)
Adiantum
aleuticum
(western maidenhair fern)
Adiantum
capillus-veneris
(black maidenhair fern)
Adiantum
formosum
(Giant maidenhair fern)
Adiantum
hispidulum
(Rough Maidenhair Fern)
Adiantum
jordanii
(California Maidenhair Fern)
Adiantum
pedatum
(Northern Maidenhair Fern)
Adiantum
raddianum
(Maidenhair Fern)
Adiantum
venustum
(Himalayan maidenhair fern)
Adonidia
merrillii
(Christmas Palm)
Adonidia
spp.
(Christmas Palm)
Adoxa
moschatellina
(Moschatel)
Adoxa
spp.
(Moschatel)
Aechmea
fasciata
(Silver Vase Bromeliad)
Aechmea
spp.
(Aechmea)
Aegiceras
corniculatum
(river mangrove)
Aegiceras
spp.
(River Mangrove)
Aegopodium
podagraria
(Goutweed)
Aegopodium
spp.
(goutweed)
Aeonium
arboreum
(Tree Aeonium)
Aeonium
spp.
(tree houseleeks)
Aesculus
californica
(California Buckeye)
Aesculus
×
carnea
'Briotii'
(red horse chestnut)
Aesculus
chinensis
(Chinese Horse Chestnut)
Aesculus
flava
(Yellow Buckeye)
Aesculus
glabra
(Ohio Buckeye)
Aesculus
hippocastanum
(horse chestnut)
Aesculus
indica
(Indian Horse Chestnut)
Aesculus
parviflora
(Bottlebrush Buckeye)
Aesculus
pavia
(Red Buckeye)
Aesculus
spp.
(buckeyes and horse-chestnuts)
Aesculus
turbinata
(Japanese Horse Chestnut)
Aethusa
cynapium
(Fool's parsley)
Aethusa
spp.
(Fool's Parsley)
Agalinis
heterophylla
(Prairie False Foxglove)
Agalinis
purpurea
(purple false foxglove)
Agalinis
spp.
(false foxgloves)
Agalinis
tenuifolia
(slender false foxglove)
Agapanthus
(Lily of the Nile; African Lily)
Agapanthus
africanus
(lily of the Nile)
Agapanthus
praecox
(blue lily)
Agastache
(Hyssops)
Agastache
'Black Adder'
(Black Adder Hummingbird Mint)
Agastache
'Blue Fortune'
(Blue Fortune Hummingbird Mint)
Agastache
foeniculum
(Anise Hyssop)
Agastache
rupestris
(Sunset Hyssop)
Agastache
spp.
(hyssop)
Agastache
urticifolia
(nettle-leaf giant hyssop)
Agathosma
spp.
(Buchus)
Agave
americana
(Century Plant)
Agave
americana
'Variegata'
(Variegated Century Plant)
Agave
attenuata
(Fox Tail Agave)
Agave
×
'Blue Glow'
(Blue Glow Agave)
Agave
deserti
(desert agave)
Agave
geminiflora
(Twin Flower Agave Plant)
Agave
palmeri
(Palmer's agave)
Agave
parryi
var.
couesii
(Coues Agave)
Agave
spp.
(century plants)
Agave
vilmoriniana
(Octopus Agave)
Ageratina
adenophora
(Crofton Weed)
Ageratina
altissima
'Chocolate'
(Chocolate White Snakeroot)
Ageratina
havanensis
(Shrubby boneset)
Ageratina
riparia
(mist flower)
Ageratina
spp.
(snakeroots)
Ageratum
houstonianum
(Flossflower)
Ageratum
spp.
(Ageratums)
Aglaonema
commutatum
(Chinese Evergreen)
Aglaonema
spp.
(Chinese evergreens)
Agonis
flexuosa
(Western Australian Peppermint)
Agonis
spp.
(Peppermint Tree)
Agoseris
spp.
(mountain dandelions)
Agrimonia
eupatoria
(common agrimony)
Agrimonia
gryposepala
(tall hairy agrimony)
Agrimonia
parviflora
(swamp agrimony)
Agrimonia
spp.
(agrimonies)
Agropyron
cristatum
(Crested Wheatgrass)
Agropyron
spp.
(Crested Wheatgrass)
Agrostemma
githago
(corn cockle)
Agrostemma
spp.
(Corncockle)
Agrostis
capillaris
(colonial bentgrass)
Agrostis
gigantea
(redtop)
Agrostis
spp.
(bent grass)
Agrostis
stolonifera
(creeping bentgrass)
Ailanthus
altissima
(tree of heaven)
Ailanthus
spp.
Aira
praecox
(early hair grass)
Aira
spp.
Aizoon
pubescens
(Coastal Galenia)
Aizoon
spp.
Ajuga
australis
(Austral Bugle)
Ajuga
reptans
(creeping bugleweed)
Ajuga
reptans
'Black Scallop'
(Bugleweed)
Ajuga
reptans
'Chocolate Chip'
(Chocolate Chip Bugleweed)
Ajuga
spp.
(Bugles)
Akebia
quinata
(five-leaved akebia)
Akebia
spp.
Albizia
julibrissin
(silk tree)
Albizia
spp.
(Mimosa, silk trees, false-thorns, and allies)
Albuca
spp.
(Slimelilies)
Alcea
rosea
(common hollyhock)
Alcea
spp.
(hollyhocks)
Alchemilla
alpina
(Alpine Lady's-mantle)
Alchemilla
arvensis
(Field Parsley Piert)
Alchemilla
conjuncta
(Silver Lady's Mantle)
Alchemilla
erythropoda
(Dwarf Lady's Mantle)
Alchemilla
mollis
(Lady's Mantle)
Alchemilla
spp.
(Lady's-mantles)
Alchemilla
vulgaris
(Lady's-mantle)
Alchornea
ilicifolia
(Native Holly)
Alchornea
spp.
Alectryon
spp.
Alectryon
tomentosus
(Hairy Alectryon)
Alisma
plantago-aquatica
(water-plantain)
Alisma
spp.
(water-plantains)
Allamanda
cathartica
(Allamanda Vine)
Allamanda
spp.
(golden trumpets)
Alliaria
petiolata
(garlic mustard)
Alliaria
spp.
Allionia
incarnata
(Trailing Windmills)
Allionia
spp.
Allium
acuminatum
(Hooker's Onion)
Allium
×
'Ambassador'
(Ambassador Allium)
Allium
atropurpureum
(Dark Purple Allium)
Allium
canadense
(Canadian Meadow garlic)
Allium
cepa
'Australian Brown'
(Australian Brown Onion)
Allium
cepa
'Bridger'
(Bridger Onion)
Allium
cepa
'Cabernet'
(Cabernet Red Onion)
Allium
cepa
'Candy'
(Candy Onion)
Allium
cepa
'Copra'
(Copra Onion)
Allium
cepa
'Evergreen Hardy White'
(Evergreen Hardy White Bunching Onion)
Allium
cepa
'Granex'
(Granex Onion)
Allium
cepa
'Patterson'
(Patterson Onion)
Allium
cepa
'Red Baron'
(Red Baron Scallion)
Allium
cepa
'Red Candy Apple'
(Red Candy Apple Onion)
Allium
cepa
'Red Creole'
(Red Creole Onion)
Allium
cepa
'Red Wing'
(Red Wing Storage Onion)
Allium
cepa
'Superstar'
(Superstar Onion)
Allium
cepa
'Super Star'
(Super Star Onion)
Allium
cepa
'Texas Super Sweet'
(Texas Super Sweet Onion)
Allium
cepa
'Walla Walla'
(Walla Walla Sweet Onion)
Allium
cepa
'Yellow Granex'
(Yellow Granex Onion)
Allium
cepa
'Yellow Sweet Spanish'
(Yellow Sweet Spanish Onion)
Allium
cernuum
(Nodding Onion)
Allium
cristophii
(Star of Persia)
Allium
drummondii
(Drummond's Onion)
Allium
fistulosum
(Welsh Onion (Scallions))
Allium
fistulosum
'Evergreen Hardy White'
(Evergreen Hardy White Bunching Onion)
Allium
×
'Gladiator'
(Gladiator Allium)
Allium
'Globemaster'
(globemaster onion)
Allium
hollandicum
'Purple Sensation'
(Purple Sensation Allium)
Allium
karataviense
'Ivory Queen'
(Ivory Queen Allium)
Allium
moly
(Golden Garlic)
Allium
'Mount Everest'
(Mount Everest Allium)
Allium
obliquum
(Twisted-leaf Garlic)
Allium
paradoxum
(Few-flowered Leek)
Allium
×
'Pinball Wizard'
(Pinball Wizard Allium)
Allium
proliferum
(tree onion)
Allium
'Red Giant'
(Red Giant Ornamental Onion)
Allium
roseum
(rosy garlic)
Allium
sativum
'California Early'
(California Early Softneck Garlic)
Allium
sativum
'German Red'
(German Red Garlic)
Allium
sativum
'Inchelium Red'
(Inchelium Red Garlic)
Allium
sativum
'Music'
(Music Hardneck Garlic)
Allium
schoenoprasum
(Chives)
Allium
schubertii
(satellite onion)
Allium
siculum
(Sicilian Honey Garlic)
Allium
sphaerocephalon
(Drumstick Allium)
Allium
spp.
(onions)
Allium
tricoccum
(wide leek)
Allium
triquetrum
(Three-cornered garlic)
Allium
tuberosum
(Garlic Chives)
Allium
unifolium
(one-leaved onion)
Allium
ursinum
(Ramsons)
Allium
vineale
(wild garlic)
Allocasuarina
humilis
(dwarf sheoak)
Allocasuarina
littoralis
(Black sheoak)
Allocasuarina
muelleriana
(slaty sheoak)
Allocasuarina
spp.
(sheoaks)
Allocasuarina
torulosa
(Forest sheoak)
Allocasuarina
verticillata
(Drooping She-oak)
Allowissadula
holosericea
(velvet-leaf mallow)
Allowissadula
spp.
Alnus
(Alder)
Alnus
alnobetula
(green alder)
Alnus
cordata
(Italian alder)
Alnus
glutinosa
(common alder)
Alnus
incana
(Mountain Alder)
Alnus
rhombifolia
(white alder)
Alnus
rubra
(red alder)
Alnus
serrulata
(smooth alder)
Alocasia
×
amazonica
(Alocasia Polly)
Alocasia
brisbanensis
(Cunjevoi)
Alocasia
odora
(Upright Elephant Ear)
Alocasia
reginula
(Black Velvet Alocasia)
Alocasia
spp.
(elephant's-ears)
Alocasia
zebrina
(Zebra Alocasia)
Aloe
arborescens
(Candelabra Aloe)
Aloe
aristata
(Lace Aloe)
Aloe
spp.
(Aloes)
Aloe
vera
(Aloe Vera)
Alopecurus
geniculatus
(Marsh foxtail)
Alopecurus
pratensis
(Meadow Foxtail)
Alopecurus
spp.
(Foxtail grasses)
Aloysia
gratissima
(Whitebrush)
Aloysia
spp.
Alphitonia
excelsa
(Red Ash)
Alphitonia
spp.
Alpinia
caerulea
(Native Ginger)
Alpinia
purpurata
(Red Ginger)
Alpinia
spp.
(Shell Gingers)
Alstonia
constricta
(Bitterbark)
Alstonia
spp.
Alstroemeria
(Peruvian lily, lily of the Incas)
Alternanthera
denticulata
(Lesser Joyweed)
Alternanthera
ficoidea
(Joseph's Coat)
Alternanthera
philoxeroides
(Alligatorweed)
Alternanthera
spp.
(Joyweeds)
Althaea
officinalis
(marsh mallow)
Althaea
spp.
Alyogyne
spp.
(Blue Hibiscus)
Alyssum
spp.
(Alyssum)
Alyxia
buxifolia
(Sea Box)
Alyxia
ruscifolia
(Chain Fruit)
Alyxia
spp.
Amaranthus
palmeri
(Palmer's Amaranth)
Amaranthus
retroflexus
(redroot pigweed)
Amaranthus
spp.
(amaranths)
Amaryllis
belladonna
(Belladonna Lily)
Amaryllis
spp.
Amauropelta
noveboracensis
(New York fern)
Amauropelta
spp.
Amblystegium
serpens
(creeping feather-moss)
Amblystegium
spp.
Ambrosia
acanthicarpa
(Flatspine Bursage)
Ambrosia
artemisiifolia
(common ragweed)
Ambrosia
chamissonis
(silver beachweed)
Ambrosia
deltoidea
(triangle-leaf bursage)
Ambrosia
dumosa
(Burrobush)
Ambrosia
psilostachya
(western ragweed)
Ambrosia
salsola
(Cheesebush)
Ambrosia
spp.
(Ragweeds)
Ambrosia
trifida
(giant ragweed)
Amelanchier
alnifolia
(serviceberry)
Amelanchier
arborea
(common serviceberry)
Amelanchier
grandiflora
(Apple Serviceberry)
Amelanchier
spp.
(serviceberries)
Amelanchier
ssp.
(serviceberry)
Amelanchier
utahensis
(Utah Serviceberry)
Ammophila
arenaria
(European Beachgrass)
Ammophila
breviligulata
(American Beachgrass)
Ammophila
spp.
(Marram grass)
Amorpha
canescens
(leadplant)
Amorpha
fruticosa
(false indigo bush)
Amorpha
spp.
Ampelodesmos
spp.
(Mauritania grass)
Ampelopsis
cordata
(heart leaf peppervine)
Ampelopsis
glandulosa
(Porcelain Berry)
Ampelopsis
spp.
(porcelainberry)
Amperea
spp.
Amperea
xiphoclada
(Broom Spurge)
Amphiachyris
dracunculoides
(prairie broomweed)
Amphiachyris
spp.
Amphibolis
antarctica
(Sea Nymph)
Amphibolis
spp.
(Sea Nymph)
Amphicarpaea
bracteata
(American hog-peanut)
Amphicarpaea
spp.
(Hog Peanut)
Amsinckia
menziesii
(Common Fiddleneck)
Amsinckia
spp.
(Fiddlenecks)
Amsinckia
tessellata
(Bristly Fiddleneck)
Amsonia
×
'Blue Ice'
(Blue Ice Bluestar)
Amsonia
ciliata
(Fringed Bluestar)
Amsonia
hubrichtii
(Arkansas Bluestar)
Amsonia
illustris
(Shining Bluestar)
Amsonia
spp.
(bluestars)
Amsonia
tabernaemontana
(Eastern Bluestar)
Amsonia
tabernaemontana
var.
salicifolia
(Willow-leaf Bluestar)
Amyema
cambagei
(needle-leaf mistletoe)
Amyema
congener
(variable mistletoe)
Amyema
miquelii
(Box Mistletoe)
Amyema
pendula
(drooping mistletoe)
Amyema
preissii
(wireleaf mistletoe)
Amyema
quandang
(grey mistletoe)
Amyema
spp.
(Mistletoe)
Anacamptis
morio
(green-winged orchid)
Anacamptis
pyramidalis
(pyramidal orchid)
Anacamptis
spp.
(Pyramidal Orchid)
Anacardium
occidentale
(Cashew)
Anacardium
spp.
(Cashew)
Anacyclus
spp.
(Mount Atlas daisy)
Ananas
comosus
(Pineapple Plant)
Ananas
spp.
(pineapple)
Anaphalis
margaritacea
(pearly everlasting)
Anaphalis
spp.
(everlastings)
Anaphalis
triplinervis
(Triple-Veined Pearly Everlasting)
Anasa
spp.
Anasa
tristis
(Squash Bug)
Anatherum
spp.
(New World Bluestems)
Anatherum
tenuispatheum
(Maritime Bushy Bluestem)
Anatherum
virginicum
(broomsedge bluestem)
Anchusa
arvensis
(small bugloss)
Anchusa
azurea
(Italian bugloss)
Anchusa
officinalis
(common bugloss)
Anchusa
spp.
(Alkanets)
Andersonglossum
spp.
(Wild Comfrey)
Andersonglossum
virginianum
(wild comfrey)
Andromeda
polifolia
(Bog Rosemary)
Andromeda
spp.
(Bog Rosemary)
Andropogon
gerardi
(big bluestem)
Andropogon
gerardii
(Big Bluestem)
Andropogon
glomeratus
(Bushy Bluestem)
Andropogon
spp.
(bluestems)
Andropogon
ternarius
(Splitbeard Bluestem)
Andropogon
virginicus
(Broomsedge Bluestem)
Aneilema
acuminatum
(Pointed Aneilema)
Aneilema
spp.
Anemanthele
lessoniana
(New Zealand Wind Grass)
Anemanthele
spp.
(New Zealand Wind Grass)
Anemonastrum
canadense
(Canada anemone)
Anemonastrum
spp.
(Canada Anemone)
Anemone
berlandieri
(Tenpetal Anemone)
Anemone
blanda
(windflower)
Anemone
coronaria
(poppy anemone)
Anemone
hupehensis
'September Charm'
(September Charm Japanese Anemone)
Anemone
leveillei
(Leveille's Anemone)
Anemone
multifida
(Pacific Anemone)
Anemone
nemorosa
(wood anemone)
Anemone
spp.
(anemones and thimbleweeds)
Anemone
virginiana
(tall thimbleweed)
Anemone
x
hybrida
(Japanese anemone)
Anemonoides
apennina
(Blue Anemone)
Anemonoides
blanda
(Greek Anemone)
Anemonoides
nemorosa
(wood anemone)
Anemonoides
quinquefolia
(wood anemone)
Anemonoides
ranunculoides
(Yellow Anemone)
Anemonoides
spp.
(wood anemones)
Anemonopsis
macrophylla
(False Anemone)
Anemonopsis
spp.
(False Anemone)
Anemopsis
californica
(Yerba Mansa)
Anemopsis
spp.
(Yerba Mansa)
Anethum
graveolens
(Dill)
Anethum
spp.
(Dill)
Angelica
archangelica
(Garden angelica)
Angelica
atropurpurea
(purple-stemmed angelica)
Angelica
gigas
(Korean Angelica)
Angelica
spp.
(angelicas)
Angelica
sylvestris
(Wild Angelica)
Angelonia
angustifolia
(Summer Snapdragon)
Angelonia
spp.
(summer snapdragon)
Angophora
costata
(Smooth-barked apple)
Angophora
floribunda
(Rough-barked Apple)
Angophora
hispida
(Dwarf apple)
Angophora
leiocarpa
(Smooth-barked Apple)
Angophora
spp.
(Apple Gum)
Anigozanthos
humilis
(Catspaw)
Anigozanthos
manglesii
(Red and Green Kangaroo Paw)
Anigozanthos
spp.
(Kangaroo paws)
Anisocarpus
madioides
(woodland madia)
Anisocarpus
spp.
(Tarweed)
Annona
glabra
(Pond Apple)
Annona
muricata
(Soursop)
Annona
spp.
(custard apples)
Annona
squamosa
(Sugar Apple)
Anopterus
glandulosus
(Tasmanian laurel)
Anopterus
spp.
(Tasmanian Laurel)
Anredera
cordifolia
(Mignonette vine)
Anredera
spp.
(Madeira Vine)
Antennaria
dioica
'Rubra'
(Red Pussytoes)
Antennaria
microphylla
(Rosy Pussytoes)
Antennaria
neglecta
(Field Pussytoes)
Antennaria
parlinii
(Parlin's Pussytoes)
Antennaria
parvifolia
(small-leaf pussytoes)
Antennaria
plantaginifolia
(plantain-leaved pussytoes)
Antennaria
rosea
(Rosy Pussytoes)
Antennaria
spp.
(pussytoes)
Anthemis
cotula
(chamomile)
Anthemis
spp.
(Chamomiles)
Anthericum
ramosum
(Branched St Bernard's Lily)
Anthericum
spp.
(St Bernard's Lily)
Anthoxanthum
odoratum
(sweet vernal grass)
Anthoxanthum
spp.
(sweetgrasses)
Anthriscus
caucalis
(Bur Parsley)
Anthriscus
cerefolium
(Chervil)
Anthriscus
spp.
(Chervils)
Anthriscus
sylvestris
(wild chervil)
Anthurium
andraeanum
(Flamingo Flower)
Anthurium
clarinervium
(Velvet Cardboard Anthurium)
Anthurium
spp.
(anthuriums)
Anthyllis
spp.
(Kidney Vetch)
Anthyllis
vulneraria
(Common Kidney-Vetch)
Anticlea
elegans
(Mountain Deathcamas)
Anticlea
spp.
(Death Camas)
Antigonon
leptopus
(Coral Vine)
Antigonon
spp.
(Coral Vine)
Antirrhinum
majus
(snapdragon)
Antirrhinum
spp.
(Snapdragons)
Aotus
ericoides
(Common Aotus)
Aotus
spp.
(Golden Pea)
Aphananthe
philippinensis
(Axe handle Wood)
Aphananthe
spp.
(Muku Tree)
Aphanostephus
ramosissimus
(Lazy Daisy)
Aphanostephus
spp.
(Lazy Daisy)
Aphyllon
spp.
(Broomrape)
Aphyllon
uniflorum
(one-flowered cancer-root)
Apios
americana
(American groundnut)
Apios
spp.
(Groundnut)
Apium
prostratum
(Sea Celery)
Apium
spp.
(Celery)
Aplectrum
hyemale
(putty root)
Aplectrum
spp.
(Putty Root)
Apoballis
spp.
Apocissus
antarctica
(Kangaroo Vine)
Apocissus
hypoglauca
(Five-Leaved Water Vine)
Apocissus
spp.
(Native Grape)
Apocynum
androsaemifolium
(Spreading Dogbane)
Apocynum
cannabinum
(hemp dogbane)
Apocynum
×
floribundum
(intermediate dogbane)
Apocynum
spp.
(dogbanes)
Aponogeton
distachyos
(Water Hawthorn)
Aponogeton
natans
(floating water hawthorn)
Aponogeton
spp.
(Cape Pondweed)
Apopellia
endiviifolia
(Endive Pellia)
Apopellia
spp.
(Endive Liverwort)
Aptenia
cordifolia
(Livingstone Daisy)
Aptenia
spp.
(Heartleaf Ice Plant)
Aquilegia
canadensis
(Wild Columbine)
Aquilegia
coerulea
(blue columbine)
Aquilegia
formosa
(Red Columbine)
Aquilegia
spp.
(columbines)
Aquilegia
vulgaris
(columbine)
Aquilegia
vulgaris
var.
stellata
'Black Barlow'
(Columbine)
Arabidopsis
lyrata
(Lyreleaf Rockcress)
Arabidopsis
spp.
Arabidopsis
thaliana
(mouse-ear cress)
Arabis
spp.
(Rock-cresses)
Arachis
spp.
(peanuts)
Arachniodes
simplicior
(Variegated Holly Fern)
Arachniodes
spp.
(Holly Fern)
Aralia
californica
(California Spikenard)
Aralia
elata
(Japanese angelica tree)
Aralia
nudicaulis
(wild sarsaparilla)
Aralia
racemosa
(American spikenard)
Aralia
spinosa
(devil's walkingstick)
Aralia
spp.
(spikenards)
Araucaria
araucana
(Monkey Puzzle Tree)
Araucaria
bidwillii
(Bunya Pine)
Araucaria
cunninghamii
(Hoop pine)
Araucaria
heterophylla
(Norfolk Island Pine)
Araucaria
spp.
(araucarias)
Araujia
sericifera
(Moth Vine)
Araujia
spp.
(Moth Plant)
Arbutus
×
andrachnoides
(hybrid strawberry-tree)
Arbutus
'Marina'
(Marina Strawberry Tree)
Arbutus
menziesii
(madrone)
Arbutus
spp.
(madrones)
Arbutus
unedo
(strawberry tree)
Arbutus
x
andrachnoides
(Hybrid Strawberry Tree)
Archontophoenix
cunninghamiana
(Piccabeen Palm)
Archontophoenix
spp.
(King Palm)
Arctium
lappa
(greater burdock)
Arctium
minus
(burrdock)
Arctium
spp.
(burdocks)
Arctium
tomentosum
(Woolly Burdock)
Arctostaphylos
(bearberries and manzanitas)
Arctostaphylos
columbiana
(hairy manzanita)
Arctostaphylos
densiflora
(Sentinel Manzanita)
Arctostaphylos
edmundsii
(Pacific Mist Manzanita)
Arctostaphylos
glandulosa
(Eastwood's Manzanita)
Arctostaphylos
glauca
(Big Berry Manzanita)
Arctostaphylos
hookeri
(Mills Manzanita)
Arctostaphylos
manzanita
(Dr. Hurd Manzanita)
Arctostaphylos
×
media
(Media Manzanita)
Arctostaphylos
patula
(greenleaf manzanita)
Arctostaphylos
pungens
(pointleaf manzanita)
Arctostaphylos
spp.
(manzanita)
Arctostaphylos
uva-ursi
(kinnikinnick)
Arctostaphylos
viscida
(Whiteleaf Manzanita)
Arctotheca
calendula
(Capeweed)
Arctotheca
spp.
(Capeweed)
Arctotis
spp.
(African Daisies)
Ardisia
crenata
(Coralberry)
Ardisia
spp.
(marlberry)
Arenaria
serpyllifolia
(Thyme-leaved Sandwort)
Arenaria
spp.
(Sandwort)
Argemone
albiflora
(white prickly poppy)
Argemone
munita
(flatbud prickly poppy)
Argemone
platyceras
(Crested Pricklypoppy)
Argemone
polyanthemos
(thistle poppy)
Argemone
spp.
(prickly poppies)
Argentina
anserina
(common silverweed)
Argentina
egedii
(Pacific Silverweed)
Argentina
pacifica
(Pacific silverweed)
Argentina
spp.
(Silverweeds)
Argentipallium
obtusifolium
(Blunt everlasting)
Argentipallium
spp.
(Paper Daisy)
Argyranthemum
spp.
(marguerite daisy)
Aria
edulis
(Whitebeam)
Aria
spp.
(Whitebeam)
Arisaema
(jack-in-the-pulpits and cobra lilies)
Arisaema
candidissimum
(White Jack-in-the-pulpit)
Arisaema
consanguineum
(Cobra Lily)
Arisaema
dracontium
(green dragon)
Arisaema
ringens
(Japanese Cobra Plant)
Arisaema
sikokianum
(Shikoku Cobra Lily)
Arisaema
taiwanense
(Formosa Cobra Lily)
Arisaema
triphyllum
(Jack-in-the-pulpit)
Arisarum
proboscideum
(Mouse Plant)
Arisarum
spp.
Aristea
spp.
(Blue Brilliant)
Aristida
purpurea
(Purple Threeawn)
Aristida
spp.
(threeawns and wiregrasses)
Aristolochia
californica
(California Dutchman's Pipe)
Aristolochia
spp.
(pipevines and birthworts)
Armeria
juniperifolia
(Juniper-leaved Thrift)
Armeria
maritima
(sea thift)
Armeria
maritima
'Victor Reiter'
(Victor Reiter Sea Thrift)
Armeria
spp.
(Thrift)
Armoracia
rusticana
(Horseradish)
Armoracia
spp.
Arnica
chamissonis
(Meadow Arnica)
Arnica
cordifolia
(heartleaf arnica)
Arnica
spp.
(Arnica)
Arnoglossum
atriplicifolium
(pale Indian plantain)
Arnoglossum
plantagineum
(prairie Indian plantain)
Arnoglossum
spp.
Aronia
arbutifolia
(red chokeberry)
Aronia
melanocarpa
(Chokecherry)
Aronia
melanocarpa
'Viking'
(Viking Aronia Chokeberry)
Aronia
×
prunifolia
(purple chokeberry)
Aronia
spp.
(chokeberries)
Arrhenatherum
elatius
(tall oat grass)
Arrhenatherum
spp.
Artemisia
abrotanum
(Southernwood)
Artemisia
californica
(California sagebrush)
Artemisia
caudata
(Beach Wormwood)
Artemisia
douglasiana
(California mugwort)
Artemisia
dracunculus
(French Tarragon)
Artemisia
filifolia
(sand sagebrush)
Artemisia
frigida
(fringed sagebrush)
Artemisia
lactiflora
(White Mugwort)
Artemisia
ludoviciana
(Silver Wormwood)
Artemisia
mauiensis
'Makana Silver'
(Makana Silver Wormwood)
Artemisia
pontica
(Roman Wormwood)
Artemisia
'Powis Castle'
(Powis Castle Artemisia)
Artemisia
pycnocephala
(coastal sagewort)
Artemisia
spp.
(wormwoods and sagebrushes)
Artemisia
suksdorfii
(Coastal Mugwort)
Artemisia
tridentata
(Big Sagebrush)
Artemisia
vulgaris
(common mugwort)
Arthropodium
candidum
(White Rock Lily)
Arthropodium
fimbriatum
(Nodding Chocolate Lily)
Arthropodium
milleflorum
(pale vanilla lily)
Arthropodium
spp.
Arthropodium
strictum
(chocolate lily)
Arthropteris
spp.
Arthropteris
tenella
(Climbing Fern)
Artocarpus
spp.
(Artocarpus)
Arum
italicum
(lords and ladies)
Arum
maculatum
(Cuckoo-pint)
Arum
spp.
(arum lilies)
Aruncus
aethusifolius
(Dwarf Goatsbeard)
Aruncus
dioicus
(goatsbeard)
Aruncus
dioicus
var.
aethusifolius
(Dwarf Goatsbeard)
Aruncus
spp.
Arundinaria
gigantea
(river cane)
Arundinaria
spp.
(Canes)
Arundinaria
tecta
(switch cane)
Arundo
donax
(giant reed)
Arundo
spp.
Asarum
arifolium
(Little Brown Jugs)
Asarum
caudatum
(Wild Ginger)
Asarum
europaeum
(European Wild Ginger)
Asarum
reflexum
(Reflexed Wild Ginger)
Asarum
splendens
(Chinese Wild Ginger)
Asarum
spp.
(wild gingers)
Asclepias
(milkweeds)
Asclepias
amplexicaulis
(clasping milkweed)
Asclepias
asperula
(Antelopehorn Milkweed)
Asclepias
cordifolia
(heart-leaf milkweed)
Asclepias
curassavica
(tropical milkweed)
Asclepias
eriocarpa
(woollypod milkweed)
Asclepias
exaltata
(poke milkweed)
Asclepias
fascicularis
(Narrow-leaf Milkweed)
Asclepias
humistrata
(Sandhill milkweed)
Asclepias
incarnata
(Swamp Milkweed)
Asclepias
incarnata
'Ice Ballet'
(Ice Ballet Swamp Milkweed)
Asclepias
latifolia
(broadleaf milkweed)
Asclepias
oenotheroides
(Zizotes milkweed)
Asclepias
perennis
(Aquatic Milkweed)
Asclepias
purpurascens
(purple milkweed)
Asclepias
quadrifolia
(four-leaved milkweed)
Asclepias
speciosa
(Showy Milkweed)
Asclepias
spp.
(Native Milkweed Selections)
Asclepias
syriaca
(common milkweed)
Asclepias
tuberosa
(Butterfly Weed)
Asclepias
variegata
(redring milkweed)
Asclepias
verticillata
(Whorled Milkweed)
Asclepias
viridiflora
(green comet milkweed)
Asclepias
viridis
(green antelopehorns)
Asimina
parviflora
(Small-Flower Pawpaw)
Asimina
×
piedmontana
(Piedmont Pawpaw)
Asimina
reticulata
(netted pawpaw)
Asimina
spp.
Asimina
triloba
(Pawpaw)
Aspalathus
spp.
(Aspalathuses)
Asparagus
aethiopicus
(African Asparagus)
Asparagus
asparagoides
(Cape Smilax)
Asparagus
densiflorus
'Myersii'
(Foxtail Fern)
Asparagus
officinalis
(wild asparagus)
Asparagus
scandens
(Climbing asparagus)
Asparagus
setaceus
(Asparagus Plumosa Fern)
Asparagus
spp.
(Asparagus)
Asperula
conferta
(Common Woodruff)
Asperula
spp.
Asphodelus
fistulosus
(Onion-Leafed Asphodel)
Asphodelus
spp.
(asphodels)
Aspidistra
elatior
(Cast Iron Plant)
Aspidistra
spp.
Asplenium
adiantum-nigrum
(black spleenwort)
Asplenium
australasicum
(Bird's nest fern)
Asplenium
ceterach
(Rustyback)
Asplenium
flabellifolium
(Necklace Fern)
Asplenium
marinum
(sea spleenwort)
Asplenium
nidus
(Bird's Nest Fern)
Asplenium
platyneuron
(ebony spleenwort)
Asplenium
rhizophyllum
(walking fern)
Asplenium
ruta-muraria
(wall-rue)
Asplenium
scolopendrium
(Harts Tongue Fern)
Asplenium
scolopendrium
'Angustatum'
(Narrow Hart's Tongue Fern)
Asplenium
spp.
(Spleenworts)
Asplenium
trichomanes
(Maidenhair Spleenwort)
Aster
(true asters)
Aster
novi-belgii
(New York Aster)
Aster
spp.
(aster)
Aster
tataricus
'Jindai'
(Jindai Aster)
Astilbe
(false goat's beards)
Astilbe
'Amethyst'
(Amethyst Astilbe)
Astilbe
×
arendsii
'Fanal'
(Fanal Astilbe)
Astilbe
chinensis
'Vision in Pink'
(Vision in Pink Chinese Astilbe)
Astilbe
chinensis
'Vision in White'
(Vision in White Chinese Astilbe)
Astilbe
×
japonica
'Deutschland'
(Deutschland Astilbe)
Astilbe
japonica
'Europa'
(Japanese Astilbe)
Astilbe
×
japonica
'Rheinland'
(Rheinland Astilbe)
Astilbe
spp.
(astilbe)
Astragalus
lentiginosus
(Freckled Milkvetch)
Astragalus
purshii
(woollypod milkvetch)
Astragalus
spp.
(milkvetches)
Astragalus
trichopodus
(Santa Barbara Milkvetch)
Astrantia
major
(Great Masterwort)
Astrantia
major
'Roma'
(Roma Masterwort)
Astrantia
major
'Rubra'
(Rubra Masterwort)
Astrantia
major
'Ruby Wedding'
(Ruby Wedding Masterwort)
Astrantia
major
'Sunningdale Variegated'
(Sunningdale Variegated Masterwort)
Astrantia
major
'Venice'
(Venice Masterwort)
Astrantia
maxima
(Large Masterwort)
Astrantia
spp.
Astrotricha
latifolia
(Broad-leaf Star Hair)
Astrotricha
spp.
Asystasia
spp.
(Coromandels)
Athyrium
angustum
(northern lady fern)
Athyrium
asplenioides
(southern lady fern)
Athyrium
filix-femina
(lady fern)
Athyrium
filix-femina
'Frizelliae'
(Tatting Fern)
Athyrium
filix-femina
'Victoriae'
(Victoria Lady Fern)
Athyrium
'Ghost'
(Ghost Fern)
Athyrium
niponicum
'Pictum'
(Japanese Painted Fern)
Athyrium
otophorum
(Eared Lady Fern)
Athyrium
spp.
(lady ferns)
Atractocarpus
fitzalanii
(Brown Gardenia)
Atractocarpus
spp.
Atrichum
angustatum
(lesser smoothcap)
Atrichum
spp.
(Smoothcap Mosses)
Atrichum
undulatum
(Catherine's moss)
Atriplex
canescens
(Fourwing Saltbush)
Atriplex
cinerea
(Grey Saltbush)
Atriplex
confertifolia
(Shadscale Saltbush)
Atriplex
halimus
(Mediterranean Saltbush)
Atriplex
hymenelytra
(Desert Holly)
Atriplex
laciniata
(Frosted Orache)
Atriplex
lentiformis
(big saltbush)
Atriplex
littoralis
(Grass-leaved Orache)
Atriplex
patula
(Common Orache)
Atriplex
portulacoides
(Sea-purslane)
Atriplex
prostrata
(Creeping Saltbush)
Atriplex
semibaccata
(berry saltbush)
Atriplex
spp.
(Saltbushes)
Atropa
bella-donna
(Deadly Nightshade)
Atropa
spp.
Aubrieta
deltoidea
(purple rock cress)
Aubrieta
×
'Red Cascade'
(Red Cascade Aubretia)
Aubrieta
spp.
Aucuba
japonica
(Japanese aucuba)
Aucuba
japonica
'Gold Dust'
(Gold Dust aucuba)
Aucuba
japonica
'Mr. Goldstrike'
(Mr. Goldstrike Aucuba)
Aucuba
spp.
Aureolaria
spp.
(yellow false foxgloves)
Aurinia
saxatilis
'Summit'
(Summit Basket of Gold)
Aurinia
spp.
Austromyrtus
dulcis
(Midgen Berry)
Austromyrtus
spp.
Austrosteenisia
blackii
(Blood Vine)
Austrosteenisia
spp.
Austrostipa
mollis
(soft speargrass)
Austrostipa
spp.
(Speargrasses)
Avena
barbata
(slender wild oat)
Avena
fatua
(wild oat)
Avena
sativa
(Common Oat)
Avena
spp.
(Oats)
Avenella
flexuosa
(wavy hair-grass)
Avenella
spp.
(Wavy hair-grass)
Averrhoa
carambola
(Star Fruit Carambola)
Averrhoa
spp.
(Carambola)
Avicennia
germinans
(black mangrove)
Avicennia
marina
(Grey Mangrove)
Avicennia
spp.
(Black mangrove)
Azadirachta
indica
(Neem Tree)
Azadirachta
spp.
(Neem)
Azara
microphylla
(Boxleaf azara)
Azara
spp.
(Vanilla tree)
Azolla
pinnata
(Feathered Mosquito Fern)
Azolla
rubra
(Red Azolla)
Azolla
spp.
(Mosquito Ferns)
Babiana
spp.
(Baboon Root)
Baccharis
halimifolia
(groundsel tree)
Baccharis
neglecta
(Poverty Weed)
Baccharis
pilularis
(Coyote Brush)
Baccharis
salicifolia
(mule fat)
Baccharis
sarothroides
(Desert Broom)
Baccharis
spp.
(Baccharis)
Backhousia
myrtifolia
(Grey Myrtle)
Backhousia
spp.
(Lemon myrtle)
Bacopa
monnieri
(Herb-of-Grace)
Bacopa
spp.
(Water hyssop)
Bahiopsis
laciniata
(Tornleaf Goldeneye)
Bahiopsis
parishii
(Parish's Goldeneye)
Bahiopsis
spp.
(Goldeneye)
Baileya
multiradiata
(Desert Marigold)
Baileya
spp.
(Desert marigold)
Balduina
angustifolia
(coastal plain honeycombhead)
Balduina
spp.
(Honeycombhead)
Ballota
nigra
(Black Horehound)
Ballota
spp.
(Horehound)
Baloskion
spp.
(Cord rush)
Baloskion
tetraphyllum
(tassel cord-rush)
Balsamorhiza
sagittata
(arrowleaf balsamroot)
Balsamorhiza
spp.
(balsamroots)
Bambusa
spp.
Banksia
aemula
(Wallum banksia)
Banksia
attenuata
(Candlestick Banksia)
Banksia
collina
(Hill Banksia)
Banksia
cunninghamii
Banksia
dallanneyi
(couch honeypot)
Banksia
ericifolia
(Heath-leaved banksia)
Banksia
grandis
(Giant Banksia)
Banksia
hookeriana
(Hooker's Banksia)
Banksia
integrifolia
(Coastal Banksia)
Banksia
marginata
(Silver Banksia)
Banksia
menziesii
(Firewood Banksia)
Banksia
oblongifolia
(Rusty Banksia)
Banksia
ornata
(Desert Banksia)
Banksia
robur
(Swamp Banksia)
Banksia
serrata
(Old man banksia)
Banksia
sessilis
(Parrot Bush)
Banksia
spinulosa
(Hairpin Banksia)
Banksia
spinulosa
'Birthday Candles'
(Dwarf Hairpin Banksia)
Banksia
spp.
(Banksias)
Baptisia
alba
var.
macrophylla
(Large-leaved White Wild Indigo)
Baptisia
australis
(Blue Wild Indigo)
Baptisia
lactea
(prairie false indigo)
Baptisia
leucophaea
(cream wild-indigo)
Baptisia
'Purple Smoke'
(Purple Smoke Baptisia)
Baptisia
spp.
(wild indigos)
Baptisia
tinctoria
(eastern wild indigo)
Barbarea
orthoceras
(American yellowrocket)
Barbarea
spp.
(wintercresses)
Barbarea
vulgaris
(bitter wintercress)
Barbula
calycina
Barbula
spp.
(Beard moss)
Barbula
unguiculata
(Bird's-Claw Beard-Moss)
Barleria
spp.
(Bushviolets)
Bassia
scoparia
(summer-cypress)
Bassia
spp.
(Burningbush)
Batis
maritima
(Saltwort)
Batis
spp.
(Saltwort)
Bauera
rubioides
(River Rose)
Bauera
spp.
(River rose)
Bauhinia
blakeana
(Hong Kong Orchid Tree)
Bauhinia
spp.
(Orchid Trees)
Bazzania
spp.
(Whip liverwort)
Bazzania
trilobata
(greater whipwort)
Beaucarnea
recurvata
(Ponytail Palm)
Beaucarnea
spp.
(Ponytail Palm)
Bebbia
juncea
(Sweetbush)
Bebbia
spp.
(Sweetbush)
Bedfordia
arborescens
(Blanket Leaf)
Bedfordia
salicina
(Blanket Bush)
Bedfordia
spp.
(Blanketleaf)
Beesia
deltophylla
(beesia)
Beesia
spp.
(Beesia)
Begonia
ferox
(Begonia Ferox)
Begonia
grandis
ssp.
(Hardy Begonia)
Begonia
grandis
ssp.
evansiana
(Hardy Begonia)
Begonia
longiciliata
(Begonia Longiciliata)
Begonia
masoniana
(Criss Cross Begonia)
Begonia
×
semperflorens-cultorum
(wax begonia)
Begonia
soli-mutata
(Begonia Soli-Mutata)
Begonia
spp.
(Begonias)
Begonia
×
tuberhybrida
(Tuberous Begonia)
Belamcanda
chinensis
(Blackberry Lily)
Belamcanda
spp.
(Blackberry Lily)
Bellardia
spp.
(Mediterranean Lineseed)
Bellardia
trixago
(Mediterranean lineseed)
Bellardia
viscosa
(Yellow Glandweed)
Bellendena
montana
(Mountain Rocket)
Bellendena
spp.
(Mountain Rocket)
Bellis
perennis
(Lawn daisy)
Bellis
spp.
(Daisies)
Berberis
aquifolium
(tall Oregon-grape)
Berberis
bealei
(leatherleaf mahonia)
Berberis
buxifolia
'Nana'
(Dwarf Magellan Barberry)
Berberis
candidula
(Paleleaf Barberry)
Berberis
darwinii
(Darwin's barberry)
Berberis
gladwynensis
'William Penn'
(William Penn Barberry)
Berberis
×
hortensis
(Hybrid Mahonia)
Berberis
japonica
(Japanese Mahonia)
Berberis
julianae
(Wintergreen barberry)
Berberis
nervosa
(Oregon-grape)
Berberis
repens
(creeping mahonia)
Berberis
spp.
(Barberries)
Berberis
thumbergii
'Orange Rocket'
(Orange Rocket Barberry)
Berberis
thunbergii
(Japanese barberry)
Berberis
thunbergii
atropurpurea
'Atropurpurea Nana'
(Crimson Pygmy barberry)
Berberis
thunbergii
'Aurea'
(golden Japanese barberry)
Berberis
thunbergii
'Crimson Pygmy'
(Crimson Pygmy Barberry)
Berberis
thunbergii
f.
atropurpurea
(purpleleaf or redleaf Japanese barberry)
Berberis
thunbergii
f.
atropurpurea
'Atropurpurea Nana'
(Crimson Pygmy barberry)
Berberis
thunbergii
f.
atropurpurea
'Helmond Pillar'
(Helmond Pillar Japanese barberry)
Berberis
thunbergii
f.
atropurpurea
'Rose Glow'
(Rose Glow Japanese barberry)
Berberis
thunbergii
f.
'Bagatelle'
(Bagatelle Barberry)
Berberis
thunbergii
f.
'Concorde'
(Concorde Barberry)
Berberis
thunbergii
f.
'Golden Ring'
(Golden Ring Barberry)
Berberis
thunbergii
f.
'Helmond Pillar'
(Helmond Pillar Barberry)
Berberis
thunbergii
f.
'Rose Glow'
(Rose Glow Barberry)
Berberis
thunbergii
'Maria'
(Sunjoy Golden Pillar Barberry)
Berberis
trifoliolata
(Agarita)
Berberis
verruculosa
(Warty barberry)
Berberis
x
gladwynensis
(Gladwyne barberry)
Berberis
x
gladwynensis
'William Penn'
(William Penn barberry)
Berchemia
scandens
(Supplejack)
Berchemia
spp.
(Supplejack)
Bergenia
(elephant-ears)
Bergenia
ciliata
(Frilly Bergenia)
Bergenia
crassifolia
(Heartleaf bergenia)
Bergenia
purpurascens
(Purple Bergenia)
Bergenia
spp.
(bergenia)
Berkheya
spp.
(African Thistles)
Berteroa
incana
(hoary alyssum)
Berteroa
spp.
(Hoary Alyssum)
Berula
erecta
(cutleaf water parsnip)
Berula
spp.
(Lesser Water-parsnip)
Beta
spp.
(Beet)
Betonica
officinalis
(common hedge-nettle)
Betonica
spp.
(Betony)
Betula
albosinensis
(Chinese Red Birch)
Betula
alleghaniensis
(Yellow Birch)
Betula
lenta
(sweet birch)
Betula
nigra
(River Birch)
Betula
nigra
'Cully'
(Heritage® river birch)
Betula
papyrifera
(paper birch)
Betula
pendula
(European white birch)
Betula
pendula
'Dalecarlica'
(cutleaf weeping birch)
Betula
pendula
'Youngii'
(Young's weeping birch)
Betula
populifolia
(gray birch)
Betula
pubescens
(Downy Birch)
Betula
spp.
(birches)
Betula
utilis
ssp.
jacquemontii
(Himalayan white birch)
Betula
utilis
var.
jacquemontii
(White-barked Himalayan Birch)
Bidens
alba
(Spanish Needles)
Bidens
aristosa
(Bearded Beggarticks)
Bidens
bipinnata
(Spanish needles)
Bidens
cernua
(Nodding Beggarticks)
Bidens
frondosa
(Devil's Beggarticks)
Bidens
laevis
(Smooth Beggarticks)
Bidens
pilosa
(Hairy Beggarticks)
Bidens
spp.
(Beggarticks)
Bigelowia
nuttallii
(Nuttall's Rayless Goldenrod)
Bigelowia
spp.
(Rayless Goldenrod)
Bignonia
capreolata
'Tangerine Beauty'
(Tangerine Beauty Crossvine)
Bignonia
spp.
(Crossvine)
Billardiera
cymosa
(sweet apple-berry)
Billardiera
fusiformis
(Australian Bluebell)
Billardiera
mutabilis
(Common Apple-berry)
Billardiera
scandens
(Apple Berry)
Billardiera
spp.
(Apple Berry)
Bismarckia
nobilis
(Bismarck Palm)
Bismarckia
spp.
(Bismarck Palm)
Bistorta
amplexicaulis
(red bistort)
Bistorta
bistortoides
(American bistort)
Bistorta
officinalis
(common bistort)
Bistorta
spp.
(bistorts)
Blackstonia
perfoliata
(Yellow-wort)
Blackstonia
spp.
(Yellow-wort)
Blandfordia
nobilis
(Christmas Bells)
Blandfordia
spp.
(Christmas Bells)
Blechnum
nudum
(Fishbone water-fern)
Blechnum
penna-marina
(Alpine Water Fern)
Blechnum
spicant
(Deer Fern)
Blechnum
spp.
(hard ferns)
Blechnum
tabulare
(Table Mountain Fern)
Blechnum
wattsii
(Hard Water-fern)
Blephilia
hirsuta
(Hairy Wood Mint)
Blephilia
spp.
(Wood Mint)
Bloomeria
crocea
(goldenstar)
Bloomeria
spp.
(Golden Stars)
Boechera
spp.
(rockcresses)
Boehmeria
cylindrica
(false nettle)
Boehmeria
platanifolia
(False Nettle)
Boehmeria
spp.
(false nettles and allies)
Boerhavia
coccinea
(scarlet spiderling)
Boerhavia
spp.
(Spiderlings)
Bolboschoenus
maritimus
(sea clubrush)
Bolboschoenus
spp.
(Sea Clubrush)
Bomarea
spp.
(climbing alstroemerias)
Borago
officinalis
(borage)
Borago
spp.
(Borage)
Borodinia
laevigata
(smooth rockcress)
Borodinia
spp.
(Rockcress)
Boronia
ledifolia
(Sydney Boronia)
Boronia
pinnata
(Pink Boronia)
Boronia
rosmarinifolia
(Pink Boronia)
Boronia
spathulata
(Spoon-leaved Boronia)
Boronia
spp.
(Boronia)
Borrichia
frutescens
(sea ox-eye)
Borrichia
spp.
(Sea Oxeye)
Bossiaea
cinerea
(Showy Bossiaea)
Bossiaea
heterophylla
(Variable Bossiaea)
Bossiaea
obcordata
(Spiny Bossiaea)
Bossiaea
prostrata
(creeping bossiaea)
Bossiaea
spp.
(Leafless bitter-peas)
Bossiella
spp.
(Bossiella coral algae)
Bothriochloa
ischaemum
(King Ranch bluestem)
Bothriochloa
spp.
(Bluestems)
Bothriochloa
torreyana
(silver bluestem)
Botrypus
spp.
(Rattlesnake fern)
Botrypus
virginianus
(rattlesnake fern)
Bougainvillea
×
buttiana
(garden bougainvillea)
Bougainvillea
spectabilis
(Bougainvillea)
Bougainvillea
spp.
(bougainvilleas)
Bouteloua
curtipendula
(Sideoats Grama)
Bouteloua
dactyloides
(Buffalo Grass)
Bouteloua
gracilis
(Blue Grama Grass)
Bouteloua
spp.
(gramas)
Bowlesia
incana
(hoary bowlesia)
Bowlesia
spp.
(Hoary bowlesia)
Boykinia
major
(Boykinia)
Boykinia
spp.
(Brookfoam)
Brachychiton
acerifolius
(flame tree)
Brachychiton
populneus
(kurrajong)
Brachychiton
rupestris
(Queensland Bottle Tree)
Brachychiton
spp.
(Kurrajongs)
Brachyglottis
Dunedin
Hybrid
'Sunshine'
(Sunshine Daisy Bush)
Brachyglottis
spp.
(Daisy bush)
Brachyloma
daphnoides
(Daphne heath)
Brachyloma
ericoides
(brush heath)
Brachyloma
spp.
(Brush-heath)
Brachypodium
spp.
(False brome)
Brachypodium
sylvaticum
(Slender False Brome)
Brachyscome
ciliaris
(Variable Daisy)
Brachyscome
multifida
(cut-leaved daisy)
Brachyscome
spathulata
(Spoon Daisy)
Brachyscome
spp.
(Swan River daisy)
Brachythecium
albicans
(Whitish Feather-moss)
Brachythecium
rutabulum
(Rough-stalked Feather-moss)
Brachythecium
spp.
Brasenia
schreberi
(Watershield)
Brasenia
spp.
(Watershield)
Brassica
juncea
'Osaka Purple'
(Osaka Purple Mustard Greens)
Brassica
juncea
'Red Giant'
(Red Giant Mustard Greens)
Brassica
napus
'Dwarf Essex'
(Dwarf Essex Rape (Turnip Greens))
Brassica
napus
'Red Russian'
(Red Russian Kale)
Brassica
oleracea
'Calabrese'
(Calabrese Broccoli)
Brassica
oleracea
'Cheddar'
(Cheddar Cauliflower)
Brassica
oleracea
'Copenhagen Market'
(Copenhagen Market Cabbage)
Brassica
oleracea
'Diablo'
(Diablo Brussels Sprouts)
Brassica
oleracea
'Di Cicco'
(Di Cicco Broccoli)
Brassica
oleracea
'Early Jersey Wakefield'
(Early Jersey Wakefield Cabbage)
Brassica
oleracea
'Georgia Southern'
(Georgia Southern Collard Greens)
Brassica
oleracea
'Lacinato'
(Lacinato Kale)
Brassica
oleracea
'Long Island Improved'
(Long Island Improved Brussels Sprouts)
Brassica
oleracea
'Purple of Sicily'
(Purple of Sicily Cauliflower)
Brassica
oleracea
'Red Acre'
(Red Acre Cabbage)
Brassica
oleracea
'Redbor'
(Redbor Kale)
Brassica
oleracea
'Red Russian'
(Red Russian Kale)
Brassica
oleracea
'Snow Crown'
(Snow Crown Cauliflower)
Brassica
oleracea
var.
sabellica
'Vates'
(Vates Kale)
Brassica
oleracea
'Waltham 29'
(Waltham 29 Broccoli)
Brassica
oleracea
'Winterbor'
(Winterbor Kale)
Brassica
rapa
'Hakurei'
(Hakurei Turnip)
Brassica
rapa
'Scarlet Queen'
(Scarlet Queen Turnip)
Brassica
rapa
'Seven Top'
(Seven Top Turnip Greens)
Brassica
rapa
'Tokyo Bekana'
(Tokyo Bekana Asian Greens)
Brassica
spp.
(cabbages and mustards)
Brassica
tournefortii
(Saharan Mustard)
Breutelia
affinis
(Red-heart Moss)
Breutelia
spp.
(Breutelia moss)
Breynia
oblongifolia
(coffee bush)
Breynia
spp.
(Snowbush)
Brickellia
californica
(California Brickellbush)
Brickellia
eupatorioides
(False Boneset)
Brickellia
spp.
(brickellbushes)
Briza
maxima
(big quaking grass)
Briza
media
(Quaking-grass)
Briza
minor
(Little quaking-grass)
Briza
spp.
(Quaking grass)
Brodiaea
coronaria
(Crown Brodiaea)
Brodiaea
elegans
(Harvest Brodiaea)
Brodiaea
spp.
(Brodiaeas)
Bromelia
spp.
(Bromelia)
Bromus
catharticus
(Rescue Brome)
Bromus
diandrus
(great brome)
Bromus
hordeaceus
(common soft brome)
Bromus
inermis
(smooth brome)
Bromus
japonicus
(Japanese brome)
Bromus
rubens
(Red Brome)
Bromus
sitchensis
(Alaska brome)
Bromus
spp.
(bromes)
Bromus
sterilis
(barren brome)
Bromus
tectorum
(cheat grass)
Broussonetia
papyrifera
(Paper mulberry)
Broussonetia
spp.
(Paper mulberry)
Brugmansia
(angel's trumpets)
Brugmansia
suaveolens
(Angel's Trumpet)
Bruguiera
gymnorhiza
(orange mangrove)
Bruguiera
spp.
(Orange mangrove)
Brunfelsia
pauciflora
(Yesterday-Today-and-Tomorrow)
Brunfelsia
spp.
(raintrees)
Brunnera
macrophylla
(perennial forget-me-not)
Brunnera
macrophylla
'Dawson'
s
White'
(Dawson's White Brunnera)
Brunnera
macrophylla
'Hadspen Cream'
(Hadspen Cream Brunnera)
Brunnera
macrophylla
'Jack Frost'
(Jack Frost Heartleaf Brunnera)
Brunnera
spp.
Brunonia
australis
(blue pincushion)
Brunonia
spp.
(Blue pincushion)
Brunoniella
australis
(Blue Trumpet)
Brunoniella
spp.
(Blue trumpet)
Bryoandersonia
illecebra
(spoon-leaved moss)
Bryoandersonia
spp.
(Spoon-leaved moss)
Bryonia
cretica
(White Bryony)
Bryonia
spp.
(Bryony)
Bryum
argenteum
(Silvery Bryum)
Bryum
spp.
(Bryum mosses)
Buchnera
floridana
(Florida bluehearts)
Buchnera
spp.
(Bluehearts)
Buddleja
davidii
(butterfly bush)
Buddleja
davidii
'Black Knight'
(Black Knight Butterfly Bush)
Buddleja
davidii
'Pink Delight'
(Pink Delight Butterfly Bush)
Buddleja
globosa
(globe butterfly bush)
Buddleja
spp.
(butterfly bushes and allies)
Buglossoides
arvensis
(corn gromwell)
Buglossoides
spp.
(Gromwell)
Bulbine
bulbosa
(Bulbine Lily)
Bulbine
spp.
(Kopievas)
Bunium
bulbocastanum
(Great Pignut)
Bunium
spp.
(Earthnut)
Buphthalmum
salicifolium
(Willowleaf Ox-eye)
Buphthalmum
spp.
Bupleurum
longifolium
(Long-leaved Hare's Ear)
Bupleurum
rotundifolium
(Thorow-wax)
Bupleurum
spp.
Burchardia
congesta
(Milkmaids)
Burchardia
spp.
Burchardia
umbellata
(Milkmaids)
Bursaria
spinosa
(Australian Blackthorn)
Bursaria
spp.
Bursera
simaruba
(Gumbo Limbo)
Bursera
spp.
(Gumbo-limbo, copal, and torchwood)
Butia
capitata
(Pindo Palm)
Butia
odorata
(Jelly Palm)
Butia
spp.
Butomus
spp.
Butomus
umbellatus
(flowering rush)
Buxus
×
'Green Velvet'
(Green Velvet Boxwood)
Buxus
microphylla
'Green Gem'
(Green Gem Boxwood)
Buxus
microphylla
'Winter Gem'
(Winter Gem Boxwood)
Buxus
sempervirens
(English Boxwood)
Buxus
sempervirens
'Aureovariegata'
(Golden Variegated Boxwood)
Buxus
sempervirens
'Green Mountain'
(Green Mountain Boxwood)
Buxus
sempervirens
'Suffruticosa'
(Dwarf English Boxwood)
Buxus
spp.
(boxes)
Byrsonima
spp.
(byrsonima)
Caesalpinia
pulcherrima
(peacock flower)
Caesalpinia
spp.
(Caesalpinia)
Caesia
calliantha
(blue grass lily)
Caesia
parviflora
(Pale Grass Lily)
Caesia
spp.
Cakile
edentula
(American searocket)
Cakile
maritima
(European Searocket)
Cakile
spp.
(Searockets)
Caladenia
cardiochila
(thick-lipped spider-orchid)
Caladenia
carnea
(Pink Lady Fingers)
Caladenia
catenata
(Lady Fingers)
Caladenia
flava
(Cowslip Orchid)
Caladenia
fuscata
(Dusky Fingers)
Caladenia
latifolia
(Pink Fairies)
Caladenia
longicauda
(White Spider Orchid)
Caladenia
moschata
(Musky Caps)
Caladenia
parva
(Small Spider-orchid)
Caladenia
picta
(Painted Fingers)
Caladenia
spp.
(spider orchids)
Caladenia
tentaculata
(eastern mantis orchid)
Caladenia
transitoria
(Eastern Bronzehood Orchid)
Caladium
bicolor
(Caladium)
Caladium
spp.
(Caladium)
Calamagrostis
×
acutiflora
'Overdam'
(Overdam Feather Reed Grass)
Calamagrostis
arenaria
(European marram grass)
Calamagrostis
brachytricha
(Korean Feather Reed Grass)
Calamagrostis
breviligulata
(American marram grass)
Calamagrostis
canadensis
(bluejoint)
Calamagrostis
×
'Cheju-Do'
(Cheju-Do Reed Grass)
Calamagrostis
epigejos
(Bushgrass)
Calamagrostis
spp.
(Reedgrasses)
Calamintha
nepeta
ssp.
nepeta
(calamint)
Calamintha
spp.
Calamus
muelleri
(Wait-a-while)
Calamus
spp.
Calandrinia
menziesii
(redmaids)
Calandrinia
spp.
Calanthe
spp.
Calanthe
triplicata
(Christmas Orchid)
Calasterella
californica
(California asterella)
Calasterella
spp.
Calathea
lancifolia
(Rattlesnake Plant)
Calathea
ornata
(Calathea Ornata)
Calathea
roseopicta
(Calathea Medallion)
Calathea
spp.
Calceolaria
spp.
(Slipper flowers)
Caleana
major
(Large Flying Duck Orchid)
Caleana
spp.
Calendula
officinalis
(Pot Marigold)
Calendula
spp.
(marigolds)
Calibrachoa
(million bells)
Calla
palustris
(marsh calla)
Calla
spp.
Calliandra
eriophylla
(pink fairy-duster)
Calliandra
haematocephala
(Pink Powder Puff)
Calliandra
spp.
(stickpeas)
Callianthe
spp.
(Flowering maples)
Callicarpa
americana
(American Beautyberry)
Callicarpa
bodinieri
(beautyberry)
Callicarpa
bodinieri
var.
'Profusion'
(Profusion Beautyberry)
Callicarpa
dichotoma
(Purple Beautyberry)
Callicarpa
spp.
(Beautyberries)
Callicladium
imponens
(brocade moss)
Callicladium
spp.
Callicoma
serratifolia
(Callicoma)
Callicoma
spp.
Calliergonella
cuspidata
(Pointed Spear-moss)
Calliergonella
spp.
Callirhoe
involucrata
(winecup mallow)
Callirhoe
spp.
(poppymallows)
Callisia
repens
(Turtle Vine)
Callisia
spp.
Callistemon
citrinus
(Red Cluster Bottlebrush)
Callistemon
spp.
Callistemon
viminalis
'Hannah Ray'
(Hannah Ray Bottlebrush)
Callistemon
viminalis
'Little John'
(Little John Dwarf Bottlebrush)
Callitriche
spp.
(Water Starworts)
Callitriche
stagnalis
(Pond water-starwort)
Callitris
glaucophylla
(White Cypress-pine)
Callitris
gracilis
(Slender Cypress-pine)
Callitris
rhomboidea
(Oyster Bay cypress-pine)
Callitris
spp.
Callitropsis
nootkatensis
(Alaska Cedar)
Callitropsis
nootkatensis
'Pendula'
(weeping Alaska yellow cedar)
Callitropsis
spp.
Calluna
spp.
Calluna
vulgaris
(Scotch Heather)
Calluna
vulgaris
'Firefly'
(Firefly Heather)
Calluna
vulgaris
'Spring Torch'
(Spring Torch Heather)
Calocedrus
decurrens
(incense cedar)
Calocedrus
spp.
Calochilus
campestris
(copper beard orchid)
Calochilus
paludosus
(red beard orchid)
Calochilus
robertsonii
(Purple Beard Orchid)
Calochilus
spp.
Calochlaena
dubia
(Common Ground Fern)
Calochlaena
spp.
Calochortus
albus
(White Globe Lily)
Calochortus
amabilis
(Diogenes' lantern)
Calochortus
gunnisonii
(Gunnison's Mariposa Lily)
Calochortus
leichtlinii
(Leichtlin's Mariposa Lily)
Calochortus
luteus
(Yellow Mariposa Lily)
Calochortus
nuttallii
(Sego Lily)
Calochortus
splendens
(Splendid Mariposa Lily)
Calochortus
spp.
(mariposa lilies)
Calochortus
tolmiei
(Tolmie's pussy ears)
Calochortus
venustus
(Butterfly Mariposa Lily)
Calopogon
spp.
Calopogon
tuberosus
(Tuberous Grasspink)
Calothamnus
spp.
(One-sided bottlebrush)
Calotis
cuneifolia
(Purple Burr-daisy)
Calotis
lappulacea
(Bur Daisy)
Calotis
spp.
Caltha
palustris
(marsh marigold)
Caltha
spp.
Calycanthus
floridus
(Carolina sweetshrub)
Calycanthus
occidentalis
(Western Spice Bush)
Calycanthus
×
raulstonii
(Raulston's allspice)
Calycanthus
spp.
Calyptocarpus
spp.
Calyptocarpus
vialis
(straggler daisy)
Calyptridium
monospermum
(One-seeded Pussypaws)
Calyptridium
spp.
(pussypaws)
Calystegia
×
lucana
(Hybrid Bindweed)
Calystegia
macrostegia
(coast morning glory)
Calystegia
purpurata
(Pacific False Bindweed)
Calystegia
sepium
(hedge bindweed)
Calystegia
silvatica
(large bindweed)
Calystegia
soldanella
(Sea Bindweed)
Calystegia
spp.
(false bindweeds)
Calytrix
spp.
Calytrix
tetragona
(Fringe Myrtle)
Camassia
cusickii
(Cusick's Camas)
Camassia
leichtlinii
(Great Camas)
Camassia
leichtlinii
subsp.
suksdorfii
(Great Camas)
Camassia
quamash
(common camas)
Camassia
scilloides
(Atlantic camas)
Camassia
spp.
(camas)
Camellia
japonica
(Japanese camellia)
Camellia
japonica
'Silver Waves'
(Silver Waves Camellia)
Camellia
sasanqua
(sasanqua camellia)
Camellia
sasanqua
'Setsugekka'
(Setsugekka Camellia)
Camellia
sinensis
(Tea Plant)
Camellia
spp.
(Camellias)
Camellia
vernalis
'Yuletide'
(Yuletide Camellia)
Camellia
williamsii
'Donation'
(Donation Camellia)
Camissoniopsis
bistorta
(California sun cup)
Camissoniopsis
cheiranthifolia
(beach suncup)
Camissoniopsis
spp.
(Suncups)
Campanula
(bellflowers)
Campanula
'Birch Hybrid'
(Birch Hybrid Bellflower)
Campanula
carpatica
(bellflower)
Campanula
garganica
'Dickson'
s
Gold'
(Dickson's Gold Bellflower)
Campanula
intercedens
(intermediate bellflower)
Campanula
lactiflora
(Milky Bellflower)
Campanula
latifolia
(Giant Bellflower)
Campanula
patula
(Spreading Bellflower)
Campanula
petiolata
(western harebell)
Campanula
portenschlagiana
(Dalmatian Bellflower)
Campanula
poscharskyana
(Serbian Bellflower)
Campanula
poscharskyana
'Blue Waterfall'
(Blue Waterfall Bellflower)
Campanula
rapunculoides
(Creeping Bellflower)
Campanula
rotundifolia
(Harebell)
Campanula
spp.
(bellflowers)
Campanulastrum
americanum
(tall bellflower)
Campanulastrum
spp.
Campanula
trachelium
(Nettle-leaved Bellflower)
Camphora
officinarum
(Camphor)
Camphora
spp.
Campsis
spp.
(trumpet vines)
Campsis
×
tagliabueana
(Hybrid Trumpet Vine)
Campylopus
introflexus
(Heath Star-moss)
Campylopus
spp.
(Swan-necked mosses)
Canadanthus
modestus
(Giant Mountain Aster)
Canadanthus
spp.
Cananga
odorata
(Ylang-Ylang)
Cananga
spp.
Canavalia
rosea
(Beach Bean)
Canavalia
spp.
Canna
glauca
(Water Canna)
Canna
×
hybrida
(Garden Canna)
Canna
spp.
(Canna Lilies)
Capnoides
sempervirens
(rock harlequin)
Capnoides
spp.
Capparis
arborea
(Brush Caper Berry)
Capparis
spp.
(Caperbushes)
Capsella
bursa-pastoris
(shepherd's purse)
Capsella
spp.
(Shepherd's-purses)
Capsicum
annuum
'Anaheim'
(Anaheim Pepper)
Capsicum
annuum
'California Wonder'
(California Wonder Bell Pepper)
Capsicum
annuum
'Cayenne'
(Cayenne Pepper)
Capsicum
annuum
'Jalapeño'
(Jalapeño Pepper)
Capsicum
annuum
'Poblano'
(Poblano Pepper)
Capsicum
annuum
'Shishito'
(Shishito Pepper)
Capsicum
annuum
'Sweet Banana'
(Sweet Banana Pepper)
Capsicum
chinense
'Carolina Reaper'
(Carolina Reaper)
Capsicum
chinense
'Habanero'
(Habanero Pepper)
Capsicum
spp.
(peppers)
Cardamine
amara
(large bittercress)
Cardamine
bulbosa
(bulbous cress)
Cardamine
californica
(milkmaids)
Cardamine
concatenata
(cut-leaved toothwort)
Cardamine
diphylla
(Two-leaved Toothwort)
Cardamine
douglassii
(Purple Cress)
Cardamine
flexuosa
(wavy bittercress)
Cardamine
hirsuta
(shotweed)
Cardamine
impatiens
(narrow-leaved bittercress)
Cardamine
maxima
(Large Toothwort)
Cardamine
nuttallii
(Nuttall's toothwort)
Cardamine
pensylvanica
(Pennsylvania Bittercress)
Cardamine
pratensis
(Cuckooflower)
Cardamine
spp.
(Bittercresses and Toothworts)
Cardamine
trifolia
(toothwort)
Cardiocrinum
giganteum
(giant Himalayan lily)
Cardiocrinum
spp.
Cardiospermum
grandiflorum
(Showy Balloon Vine)
Cardiospermum
halicacabum
(Lesser Balloon Vine)
Cardiospermum
spp.
Carduus
crispus
(Welted Thistle)
Carduus
nutans
(musk thistle)
Carduus
pycnocephalus
(Italian thistle)
Carduus
spp.
(plumeless thistles)
Carduus
tenuiflorus
(slenderflower thistle)
Carex
acutiformis
(lesser pond sedge)
Carex
albicans
(White-Tinged Sedge)
Carex
amphibola
(Creek Sedge)
Carex
amplifolia
(Bigleaf Sedge)
Carex
appalachica
(Appalachian Sedge)
Carex
appressa
(Southern Cutty Sedge)
Carex
aquatilis
(Sitka Aquatic Sedge)
Carex
arenaria
(sand sedge)
Carex
bicknellii
(Bicknell's Sedge)
Carex
blanda
(eastern woodland sedge)
Carex
brevior
(Plains Oval Sedge)
Carex
bromoides
(Brome-Like Sedge)
Carex
buchananii
(Leatherleaf Sedge)
Carex
caryophyllea
(spring sedge)
Carex
cherokeensis
(Cherokee Sedge)
Carex
comans
(Hair Sedge)
Carex
comosa
(Longhair Sedge)
Carex
crinita
(Fringed Sedge)
Carex
declinata
(Drooping Sedge)
Carex
decomposita
(Cypress-Knee Sedge)
Carex
densa
(Dense Sedge)
Carex
deweyana
(Dewey's Sedge)
Carex
divulsa
(Berkeley Sedge)
Carex
eburnea
(Ivory Sedge)
Carex
elata
'Aurea'
(Bowles' Golden Sedge)
Carex
elongata
(elongated sedge)
Carex
filiformis
(thread sedge)
Carex
firma
(firm sedge)
Carex
flacca
(Blue Sedge)
Carex
flaccosperma
(Blue Wood Sedge)
Carex
frankii
(Frank's Sedge)
Carex
grayi
(Gray's Sedge)
Carex
hirta
(hairy sedge)
Carex
'Ice Dance'
(Ice Dance Sedge)
Carex
intumescens
(bladder sedge)
Carex
leavenworthii
(Leavenworth's Sedge)
Carex
lupulina
(hop sedge)
Carex
lurida
(sallow sedge)
Carex
lyngbyei
(Lyngby's sedge)
Carex
mertensii
(Merten's Sedge)
Carex
morrowii
'Silver Sceptre'
(Silver Sceptre Japanese Sedge)
Carex
morrowii
'Variegata'
(Japanese Sedge)
Carex
muskingumensis
(Palm Sedge)
Carex
muskingumensis
'Ice Fountains'
(Ice Fountains Palm Sedge)
Carex
nigra
(smooth black sedge)
Carex
obnupta
(slough sedge)
Carex
ornithopoda
'Aurea'
(Golden Bird's Foot Sedge)
Carex
ornithopoda
'Variegata'
(Variegated Bird's Foot Sedge)
Carex
oshimensis
'Evergold'
(Evergold Japanese Sedge)
Carex
otrubae
(False Fox-sedge)
Carex
pallescens
(pale sedge)
Carex
panicea
(grass-like sedge)
Carex
pendula
(Hanging sedge)
Carex
pensylvanica
Carex
pensylvanica
(Pennsylvania Sedge)
Carex
plantaginea
(Plantain-Leaved Sedge)
Carex
praegracilis
(Clustered Field Sedge)
Carex
radiata
(Eastern Star Sedge)
Carex
remota
(Remote Sedge)
Carex
riparia
(greater pond sedge)
Carex
scaposa
(Pink-Flowered Sedge)
Carex
'Silver Sceptre'
(Silver Sceptre Sedge)
Carex
spp.
(true sedges)
Carex
sprengelii
(Sprengel's Sedge)
Carex
squarrosa
(Squarrose Sedge)
Carex
stipata
(sawbeak sedge)
Carex
stricta
(Tussock Sedge)
Carex
sylvatica
(European Woodland Sedge)
Carex
testacea
(orange New Zealand sedge)
Carex
testacea
'Prairie Fire'
(Prairie Fire Sedge)
Carex
texensis
(Texas Sedge)
Carex
umbrosa
(shade sedge)
Carex
vulpina
(fox sedge)
Carex
vulpinoidea
(Fox Sedge)
Carex
woodii
(Wood's Sedge)
Carica
papaya
(Papaya)
Carica
spp.
(Papaya)
Carissa
macrocarpa
(Natal Plum)
Carissa
ovata
(conkerberry)
Carissa
spp.
(Num-nums)
Carlina
spp.
(Carline Thistles)
Carlina
vulgaris
(Carline Thistle)
Carnegiea
gigantea
(saguaro)
Carnegiea
spp.
Carpenteria
spp.
(Bush Anemone)
Carphephorus
corymbosus
(coastalplain chaffhead)
Carphephorus
spp.
Carpinus
betulus
(European Hornbeam)
Carpinus
betulus
'Fastigiata'
(narrow European hornbeam)
Carpinus
caroliniana
(American Hornbeam)
Carpinus
cordata
(Heartleaf Hornbeam)
Carpinus
japonica
(Japanese Hornbeam)
Carpinus
spp.
(hornbeams)
Carpobrotus
chilensis
(Chilean sea fig)
Carpobrotus
edulis
(sea fig)
Carpobrotus
glaucescens
(Angular Sea-fig)
Carpobrotus
rossii
(Australian Pig Face)
Carpobrotus
spp.
(sea figs)
Carya
cordiformis
(bitternut hickory)
Carya
glabra
(pignut hickory)
Carya
illinoinensis
(pecan)
Carya
ovata
(shagbark hickory)
Carya
spp.
(hickories)
Carya
tomentosa
(mockernut)
Caryopteris
spp.
(Bluebeard)
Caryota
spp.
(Fishtail palms)
Cascabela
spp.
(Yellow Oleanders)
Cassia
×
nealiae
(rainbow shower tree)
Cassia
spp.
(Cassias)
Cassinia
aculeata
(Australian Tauhinu)
Cassinia
longifolia
(Shiny Cassinia)
Cassinia
sifton
(Sifton Bush)
Cassinia
spp.
Cassytha
filiformis
(laurel dodder)
Cassytha
glabella
(Slender Devil's Twine)
Cassytha
melantha
(Coarse Dodder-laurel)
Cassytha
pubescens
(Downy Dodder-laurel)
Cassytha
spp.
Castanea
(chestnut)
Castanea
dentata
(American chestnut)
Castanea
mollissima
(Chinese Chestnut)
Castanea
sativa
(Sweet Chestnut)
Castanopsis
cuspidata
(Japanese Chinquapin)
Castanopsis
spp.
Castanospermum
australe
(Blackbean)
Castanospermum
spp.
Castilleja
affinis
(Coast Paintbrush)
Castilleja
applegatei
(wavyleaf paintbrush)
Castilleja
chromosa
(Desert Paintbrush)
Castilleja
coccinea
(Painted-cup paintbrush)
Castilleja
exserta
(purple owl's-clover)
Castilleja
foliolosa
(woolly paintbrush)
Castilleja
hispida
(harsh paintbrush)
Castilleja
indivisa
(Texas Paintbrush)
Castilleja
integra
(Wholeleaf Paintbrush)
Castilleja
linariifolia
(Wyoming Paintbrush)
Castilleja
miniata
(Common Paintbrush)
Castilleja
rhexiifolia
(Rhexia-leaved paintbrush)
Castilleja
spp.
(Paintbrushes)
Casuarina
cunninghamiana
(River sheoak)
Casuarina
equisetifolia
(Beach Sheoak)
Casuarina
glauca
(Swamp sheoak)
Casuarina
spp.
(she-oaks)
Catalpa
(Catalpas)
Catalpa
bignonioides
'Aurea'
(Golden Indian Bean Tree)
Catalpa
bignonioides
'Nana'
(Umbrella Catalpa)
Catalpa
speciosa
(Northern Catalpa)
Catalpa
spp.
(catalpa)
Catananche
spp.
(Cupid's dart)
Catapodium
rigidum
(Fern-grass)
Catapodium
spp.
Catharanthus
roseus
(Vinca / Periwinkle)
Catharanthus
spp.
(Periwinkle)
Cattleya
spp.
(cattleya orchids)
Caulerpa
spp.
(Sea grapes)
Caulophyllum
giganteum
(early blue cohosh)
Caulophyllum
spp.
(blue cohoshes)
Caulophyllum
thalictroides
(Blue Cohosh)
Causonis
clematidea
(Slender Grape)
Causonis
spp.
Caustis
flexuosa
(Curly Wig)
Caustis
spp.
Cautleya
spp.
(Himalayan ginger lily)
Cavendishia
spp.
(Cavendishia)
Ceanothus
americanus
(New Jersey tea)
Ceanothus
cordulatus
(mountain whitethorn)
Ceanothus
cuneatus
(Buckbrush)
Ceanothus
gloriosus
(Point Reyes ceanothus)
Ceanothus
gloriosus
var.
porrectus
(ceanothus-gloriosus-var-porrectus)
Ceanothus
integerrimus
(deerbrush ceanothus)
Ceanothus
leucodermis
(chaparral whitethorn)
Ceanothus
prostratus
(Mahala mat)
Ceanothus
spp.
(Ceanothus)
Ceanothus
thyrsiflorus
(Blue Blossom)
Ceanothus
velutinus
(Snowbrush)
Ceanothus
'Victoria'
(Victoria ceanothus)
Cecropia
spp.
(Cecropias)
Cedrus
atlantica
(Atlas Cedar)
Cedrus
atlantica
'Glauca'
(blue Atlas cedar)
Cedrus
atlantica
'Glauca Fastigiata'
(narrow blue Atlas cedar)
Cedrus
atlantica
'Glauca Pendula'
(weeping blue Atlas cedar)
Cedrus
deodara
(deodar cedar)
Cedrus
libani
(cedar of Lebanon)
Cedrus
spp.
(Cedars)
Ceiba
speciosa
(Pink Silk Floss Tree)
Ceiba
spp.
(Kapok Trees)
Celastrus
orbiculatus
(Asian bittersweet)
Celastrus
scandens
(American bittersweet)
Celastrus
spp.
(bittersweets)
Celosia
argentea
(Cockscomb)
Celosia
spp.
(Cockscombs)
Celtis
(hackberries)
Celtis
laevigata
(sugar hackberry)
Celtis
occidentalis
(common hackberry)
Celtis
pallida
(spiny hackberry)
Celtis
reticulata
(netleaf hackberry)
Celtis
sinensis
(Chinese Hackberry)
Cenchrus
ciliaris
(buffelgrass)
Cenchrus
clandestinus
(Kikuyu Grass)
Cenchrus
×
cupreus
(purple fountain grass)
Cenchrus
setaceus
(Fountain Grass)
Cenchrus
spinifex
(coastal sandbur)
Cenchrus
spp.
(sandburs and fountain grasses)
Cenolophium
denudatum
(Baltic Parsley)
Cenolophium
spp.
Centaurea
cyanus
(Cornflower)
Centaurea
debeauxii
(Chalk Knapweed)
Centaurea
diffusa
(diffuse knapweed)
Centaurea
jacea
(Brown Knapweed)
Centaurea
melitensis
(Maltese star-thistle)
Centaurea
×
moncktonii
(Monckton's Knapweed)
Centaurea
montana
(Perennial Cornflower)
Centaurea
nigra
(black knapweed)
Centaurea
nigrescens
(meadow knapweed)
Centaurea
scabiosa
(Greater Knapweed)
Centaurea
solstitialis
(Yellow Star-Thistle)
Centaurea
spp.
(knapweeds)
Centaurea
stoebe
(spotted knapweed)
Centaurium
erythraea
(Common centaury)
Centaurium
pulchellum
(Lesser Centaury)
Centaurium
spp.
(Centauries)
Centaurium
tenuiflorum
(Slender Centaury)
Centella
asiatica
(Indian pennywort)
Centella
spp.
(Pennywort)
Centranthus
ruber
(Red Valerian)
Centranthus
spp.
(Valerian)
Centropogon
spp.
(Centropogons)
Centrosema
spp.
(Butterfly Peas)
Centrosema
virginianum
(butterfly pea)
Cephalanthera
damasonium
(white helleborine)
Cephalanthera
spp.
Cephalanthus
occidentalis
(Buttonbush)
Cephalanthus
spp.
Cephalaria
gigantea
(Giant Scabious)
Cephalaria
spp.
Cephalocereus
senilis
(Old Man Cactus)
Cephalocereus
spp.
Cephalotaxus
fortunei
(Chinese Plum Yew)
Cephalotaxus
harringtonia
(Japanese Plum Yew)
Cephalotaxus
spp.
Ceramium
spp.
(Banded Weeds)
Cerastium
arvense
(field chickweed)
Cerastium
fontanum
subsp.
vulgare
(mouse-ear chickweed)
Cerastium
glomeratum
(Sticky mouse-ear chickweed)
Cerastium
spp.
(Mouse-ear Chickweeds)
Ceratiola
ericoides
(Florida rosemary)
Ceratiola
spp.
Ceratocapnos
claviculata
(Climbing Corydalis)
Ceratocapnos
spp.
Ceratodon
purpureus
(Redshank)
Ceratodon
spp.
Ceratopetalum
apetalum
(coachwood)
Ceratopetalum
gummiferum
(New South Wales christmas bush)
Ceratopetalum
spp.
Ceratophyllum
demersum
(coontail)
Ceratophyllum
spp.
Ceratostigma
plumbaginoides
(Leadwort)
Ceratostigma
spp.
Ceratostigma
willmottianum
(Chinese Plumbago)
Cercidiphyllum
japonicum
(katsura)
Cercidiphyllum
japonicum
'Pendulum'
(weeping katsura)
Cercidiphyllum
spp.
Cercis
canadensis
(redbud)
Cercis
canadensis
'Covey'
(Lavender Twist Weeping Redbud Tree)
Cercis
canadensis
'Forest Pansy'
(Forest Pansy redbud)
Cercis
chinensis
'Avondale'
(Avondale Chinese Redbud)
Cercis
occidentalis
(Western Redbud)
Cercis
racemosa
(Chain-flowered Redbud)
Cercis
siliquastrum
(Judas-tree)
Cercis
spp.
(redbuds)
Cercocarpus
betuloides
(Birchleaf Mountain Mahogany)
Cercocarpus
ledifolius
(Mountain Mahogany)
Cercocarpus
montanus
(Alderleaf Mountain Mahogany)
Cercocarpus
spp.
(mountain mahoganies)
Cereus
spp.
(Cereus Cacti)
Cerinthe
spp.
(Honeywort)
Ceropegia
spp.
Ceropegia
woodii
(String of Hearts)
Cestrum
spp.
(cestrums)
Chaenactis
douglasii
(Hoary Pincushion)
Chaenactis
fremontii
(Fremont's pincushion)
Chaenactis
glabriuscula
(Common Yellow Chaenactis)
Chaenactis
spp.
(pincushion plants)
Chaenomeles
speciosa
(flowering quince)
Chaenomeles
spp.
(Flowering quinces)
Chaenostoma
spp.
(Skunkbushes)
Chaerophyllum
spp.
(Chervils)
Chaerophyllum
tainturieri
(Tainturier's chervil)
Chaerophyllum
temulum
(Rough chervil)
Chaetopappa
ericoides
(Rose Heath)
Chaetopappa
spp.
Chamaebatia
foliolosa
(Mountain Misery)
Chamaebatia
spp.
Chamaecrista
fasciculata
(partridge pea)
Chamaecrista
nictitans
(sensitive pea)
Chamaecrista
spp.
(sensitive and partridge peas)
Chamaecyparis
lawsoniana
(Lawson Cypress)
Chamaecyparis
lawsoniana
'Glauca'
(Blue Lawson Cypress)
Chamaecyparis
obtusa
(Hinoki Cypress)
Chamaecyparis
obtusa
'Filicoides'
(Fernspray Hinoki Cypress)
Chamaecyparis
obtusa
'Gracilis'
(Slender Hinoki Cypress)
Chamaecyparis
obtusa
'Kosteri'
(Koster's Hinoki Cypress)
Chamaecyparis
obtusa
'Nana'
(Dwarf Hinoki Cypress)
Chamaecyparis
obtusa
'Nana Gracilis'
(Dwarf Hinoki Cypress)
Chamaecyparis
pisifera
(Sawara Cypress)
Chamaecyparis
pisifera
'Filifera'
(Thread Cypress)
Chamaecyparis
pisifera
'Filifera Aurea'
(Golden Thread Cypress)
Chamaecyparis
pisifera
'Filifera Aurea Nana'
(Dwarf Golden Thread Cypress)
Chamaecyparis
pisifera
'Golden Mop'
(Golden Mop Cypress)
Chamaecyparis
pisifera
'Sungold'
(Sungold Falsecypress)
Chamaecyparis
spp.
(False Cypress)
Chamaedaphne
calyculata
(leatherleaf)
Chamaedaphne
spp.
Chamaedorea
cataractarum
(Cat Palm)
Chamaedorea
elegans
(Parlor Palm)
Chamaedorea
seifrizii
(Bamboo Palm)
Chamaedorea
spp.
(Parlor Palms)
Chamaenerion
angustifolium
(Fireweed)
Chamaenerion
spp.
Chamaerops
humilis
(European Fan Palm)
Chamaerops
spp.
Chamaescilla
corymbosa
(Blue Stars)
Chamaescilla
spp.
Chamerion
angustifolium
(fireweed)
Chamerion
spp.
Chara
spp.
(muskgrass)
Chasmanthium
latifolium
(Northern Sea Oats)
Chasmanthium
laxum
(Slender Woodoats)
Chasmanthium
spp.
Cheilanthes
austrotenuifolia
(Rock Fern)
Cheilanthes
lanosa
(Hairy Lip Fern)
Cheilanthes
sieberi
(cloak fern)
Cheilanthes
spp.
(Lip Ferns)
Chelidonium
diphyllum
(Celandine Poppy)
Chelidonium
majus
(Greater celandine)
Chelidonium
spp.
Chelone
glabra
(White Turtlehead)
Chelone
lyonii
(pink turtlehead)
Chelone
obliqua
(Rose Turtlehead)
Chelone
spp.
Chelonopsis
spp.
Chelonopsis
yagiharana
(Yagihara Chelonopsis)
Chenopodiastrum
murale
(nettle-leaved goosefoot)
Chenopodiastrum
spp.
(maple and nettle-leaved goosefoots)
Chenopodium
album
(lambsquarters)
Chenopodium
nutans
(Climbing saltbush)
Chenopodium
parabolicum
(Fragrant Saltbush)
Chenopodium
robertianum
(Saloop)
Chenopodium
spp.
(Goosefoots)
Chiloglottis
spp.
Chiloglottis
valida
(large bird-orchid)
Chilopsis
linearis
(desert willow)
Chilopsis
spp.
Chimaphila
maculata
(striped wintergreen)
Chimaphila
spp.
Chimaphila
umbellata
(pipsissewa)
Chimonanthus
praecox
(Wintersweet)
Chimonanthus
spp.
Chionanthus
retusus
(Chinese Fringetree)
Chionanthus
spp.
(fringetrees and allies)
Chionanthus
virginicus
(White Fringetree)
Chionochloa
rubra
(Red Tussock Grass)
Chionochloa
spp.
Chionodoxa
luciliae
(Glory of the Snow)
Chionodoxa
spp.
Chloranthus
fortunei
Chloranthus
spp.
Chloris
gayana
(Rhodes Grass)
Chloris
spp.
(windmill grasses)
Chloris
×
subdolichostachya
(shortspike windmill grass)
Chloris
truncata
(black windmill grass)
Chlorogalum
pomeridianum
(wavy-leafed soap plant)
Chlorogalum
spp.
Chlorophytum
comosum
(Spider Plant)
Chlorophytum
spp.
(Grass Lilies)
Choisya
'Aztec Pearl'
(Mexican Orange Blossom)
Choisya
spp.
Choisya
ternata
(Mexican Orange Blossom)
Choisya
ternata
'Sundance'
(Golden Mexican Orange Blossom)
Chondrus
crispus
(Irish Moss)
Chondrus
spp.
Chorispora
spp.
Chorispora
tenella
(crossflower)
Chorizanthe
rigida
(Devil's Spineflower)
Chorizanthe
spp.
Christella
dentata
(Soft Fern)
Christella
spp.
(Maiden Ferns)
Chromolaena
odorata
(Siam weed)
Chromolaena
spp.
Chrozophora
spp.
Chrozophora
tinctoria
(dyer's croton)
Chrysanthemum
(chrysanthemums)
Chrysanthemum
×
morifolium
(Garden Mum)
Chrysanthemum
spp.
(Mammoth Mums Collection)
Chrysobalanus
icaco
(Cocoplum)
Chrysobalanus
spp.
Chrysocephalum
baxteri
(Fringed Everlasting)
Chrysocephalum
semipapposum
(clustered everlasting)
Chrysocephalum
spp.
Chrysogonum
spp.
Chrysogonum
virginianum
(northern green-and-gold)
Chrysolepis
chrysophylla
(Golden Chinquapin)
Chrysolepis
sempervirens
(bush chinquapin)
Chrysolepis
spp.
Chrysopsis
mariana
(Maryland golden-aster)
Chrysopsis
spp.
Chrysosplenium
oppositifolium
(Opposite-leaved Golden-saxifrage)
Chrysosplenium
spp.
Chrysothamnus
spp.
Chrysothamnus
viscidiflorus
(Yellow Rabbitbrush)
Chusquea
culeou
(Chilean Bamboo)
Chusquea
spp.
(Chusquea Bamboo)
Chylismia
brevipes
(Golden Suncup)
Chylismia
claviformis
(Browneyes)
Chylismia
spp.
Cicerbita
macrophylla
(Common Blue-sow-thistle)
Cicerbita
spp.
Cichorium
intybus
(chicory)
Cichorium
spp.
(chicories and endives)
Cicuta
maculata
(water hemlock)
Cicuta
spp.
Cimicifuga
racemosa
(black bugbane)
Cinnamomum
spp.
Cinnamomum
verum
(True Cinnamon)
Circaea
alpina
(Alpine Enchanter's-nightshade)
Circaea
canadensis
(broadleaf enchanter's nightshade)
Circaea
lutetiana
(enchanter's-nightshade)
Circaea
spp.
(enchanter's nightshades)
Cirsium
acaulon
(Stemless Thistle)
Cirsium
altissimum
(Tall Thistle)
Cirsium
arvense
(Canada thistle)
Cirsium
discolor
(field thistle)
Cirsium
heterophyllum
(Melancholy Thistle)
Cirsium
horridulum
(bristle thistle)
Cirsium
neomexicanum
(New Mexico thistle)
Cirsium
occidentale
(Cobwebby Thistle)
Cirsium
palustre
(Marsh Thistle)
Cirsium
rivulare
(Brook Thistle)
Cirsium
spp.
(Plume Thistles)
Cirsium
texanum
(Texas Thistle)
Cirsium
undulatum
(wavyleaf thistle)
Cirsium
vulgare
(bull thistle)
Cissus
spp.
(Treebine)
Cissus
trifoliata
(sorrelvine)
Cistanthe
spp.
(pussy paws)
Cistus
albidus
(white-leaved cistus)
Cistus
creticus
(Cretan Rock-rose)
Cistus
×
incanus
(Magenta Rockrose)
Cistus
ladanifer
(Gum Rockrose)
Cistus
laurifolius
(laurel-leaved cistus)
Cistus
purpureus
(Purple Rock Rose)
Cistus
spp.
(Shrubby Rock-roses)
Cistus
x
hybridus
(White Rockrose)
Cistus
x
purpureus
(Orchid Rockrose)
Cistus
x
skanbergii
(Pink Rock Rose)
Citrullus
lanatus
'Sugar Baby'
(Sugar Baby Watermelon)
Citrullus
spp.
Citrus
×
aurantium
(Orange)
Citrus
australasica
(Finger Lime)
Citrus
×
floridana
(Limequat)
Citrus
limon
'Ponderosa'
(Ponderosa Lemon)
Citrus
×
meyeri
(Meyer Lemon)
Citrus
×
microcarpa
(Calamansi)
Citrus
reticulata
'Dancy'
(Dancy Tangerine)
Citrus
spp.
(citrus)
Citrus
trifoliata
(trifoliate orange)
Citrus
unshiu
'Owari'
(Owari Satsuma Mandarin)
Cladophora
spp.
(Blanketweed)
Cladrastis
kentukea
(American Yellowwood)
Cladrastis
spp.
Claoxylon
australe
(Brittlewood)
Claoxylon
spp.
Clarkia
amoena
(Farewell-To-Spring)
Clarkia
purpurea
(Winecup Clarkia)
Clarkia
rhomboidea
(diamond clarkia)
Clarkia
rubicunda
(ruby chalice clarkia)
Clarkia
spp.
(Clarkias)
Clarkia
unguiculata
(Elegant Clarkia)
Claytonia
caroliniana
(Carolina Springbeauty)
Claytonia
lanceolata
(Lanceleaf Springbeauty)
Claytonia
parviflora
(Streambank Springbeauty)
Claytonia
perfoliata
(Miner's Lettuce)
Claytonia
rubra
(Redstem Springbeauty)
Claytonia
sibirica
(Siberian miner's-lettuce)
Claytonia
spp.
(spring beauties)
Claytonia
virginica
(Virginia Springbeauty)
Clematicissus
opaca
(Pepper Vine)
Clematicissus
spp.
Clematis
(Clematis and leatherflowers)
Clematis
'Alionushka'
(Alionushka Clematis)
Clematis
×
'Arabella'
(Arabella Clematis)
Clematis
aristata
(Australian Clematis)
Clematis
armandii
(Armand Clematis)
Clematis
×
'Asao'
(Asao Clematis)
Clematis
'Betty Corning'
(Betty Corning Clematis)
Clematis
cirrhosa
(early clematis)
Clematis
'Constance'
(Constance Clematis)
Clematis
×
'Dr. Ruppel'
(Dr. Ruppel Clematis)
Clematis
drummondii
(Old Man's Beard Clematis)
Clematis
'Duchess of Albany'
(Duchess of Albany Clematis)
Clematis
'Duchess of Edinburgh'
(Duchess of Edinburgh Clematis)
Clematis
durandii
(Durand's Clematis)
Clematis
'Etoile Violette'
(Etoile Violette Clematis)
Clematis
glycinoides
(Headache Vine)
Clematis
×
'Henryi'
(Henryi Clematis)
Clematis
'Jackmanii'
(Jackman Clematis)
Clematis
lasiantha
(Pipestem Clematis)
Clematis
ligusticifolia
(Western White Clematis)
Clematis
'Madame Julia Correvon'
(Madame Julia Correvon)
Clematis
microphylla
(Small-leaved Clematis)
Clematis
montana
var.
'Tetrarose'
(Tetrarose Clematis)
Clematis
×
'Niobe'
(Niobe Clematis)
Clematis
patens
(spreading clematis)
Clematis
×
'Pink Champagne'
(Pink Champagne Clematis)
Clematis
pitcheri
(Pitcher's leatherflower)
Clematis
'Polish Spirit'
(Polish Spirit Clematis)
Clematis
pubescens
(Common Clematis)
Clematis
×
'Rebecca'
(Rebecca Clematis)
Clematis
×
'Sapphire Indigo'
(Sapphire Indigo Clematis)
Clematis
spp.
(clematis)
Clematis
terniflora
(Sweet Autumn Clematis)
Clematis
virginiana
(virgin's-bower)
Clematis
vitalba
(travelers-joy)
Cleome
hassleriana
(Spider Flower)
Cleome
houtteana
(Spider flower)
Cleomella
arborea
(Bladderpod)
Cleomella
serrulata
(Rocky Mountain Beeplant)
Cleomella
spp.
Cleome
spp.
(Spider Flowers)
Clerodendrum
floribundum
(Lolly Bush)
Clerodendrum
×
speciosum
(Red Bleeding Heart Vine)
Clerodendrum
spp.
(Glorybowers)
Clerodendrum
tomentosum
(Downy Chance)
Clerodendrum
trichotomum
(harlequin glorybower)
Clethra
alnifolia
(summersweet, sweet pepperbush)
Clethra
alnifolia
'Hummingbird'
(Hummingbird Summersweet)
Clethra
spp.
(Summersweet)
Cliffortia
spp.
(Caperoses)
Climacium
americanum
(American Tree Moss)
Climacium
spp.
(Climacium Mosses)
Clinopodium
douglasii
(Yerba Buena)
Clinopodium
spp.
(Calamints)
Clinopodium
vulgare
(Wild Basil)
Clintonia
andrewsiana
(Andrews' Clintonia)
Clintonia
borealis
(bluebead lily)
Clintonia
spp.
Clintonia
uniflora
(bead lily)
Clitoria
mariana
(Pigeonwings)
Clitoria
spp.
Clivia
spp.
(Bush Lilies)
Clusia
rosea
(Autograph Tree)
Clusia
spp.
(attorney trees)
Cnidoscolus
spp.
(Spurge Nettles)
Cnidoscolus
stimulosus
(spurge nettle)
Cnidoscolus
texanus
(Texas Bull Nettle)
Coccoloba
spp.
Coccoloba
uvifera
(Sea Grape)
Cochemiea
dioica
(Peninsular fishhook cactus)
Cochemiea
grahamii
(Graham's nipple cactus)
Cochemiea
spp.
Cochlearia
danica
(Danish Scurvy-grass)
Cochlearia
officinalis
(Scurvy grass)
Cochlearia
spp.
(Scurvygrasses)
Cocos
nucifera
(Coconut Palm)
Cocos
spp.
(Coconut Palms)
Codiaeum
spp.
(crotons)
Codium
fragile
(Dead Man's Fingers)
Codium
spp.
(Codiums)
Coffea
arabica
(Coffee Plant)
Coffea
spp.
(Coffees)
Colchicum
autumnale
(Autumn Crocus)
Colchicum
spp.
(Naked Ladies)
Colchicum
'Waterlily'
(Waterlily Autumn Crocus)
Coleus
(Coleus)
Coleus
australis
(little spurflower)
Coleus
scutellarioides
(Coleus)
Collinsia
heterophylla
(Purple Chinese Houses)
Collinsia
parviflora
(small-flowered blue-eyed mary)
Collinsia
spp.
(Blue-eyed Marys)
Collinsonia
canadensis
(citronella horse balm)
Collinsonia
spp.
Collomia
grandiflora
(grand collomia)
Collomia
spp.
Colocasia
esculenta
(Taro)
Colocasia
spp.
(Elephant ears)
Columnea
spp.
(Columnea)
Comandra
spp.
Comandra
umbellata
(bastard toadflax)
Comarum
palustre
(marsh cinquefoil)
Comarum
spp.
Combretum
rotundifolium
(Monkey's Brush Plant)
Combretum
spp.
(Bushwillows)
Comesperma
calymega
(Blue Spike Milkwort)
Comesperma
ericinum
(Pink Matchheads)
Comesperma
spp.
Comesperma
volubile
(Love Creeper)
Commelina
communis
(Asiatic dayflower)
Commelina
cyanea
(scurvy weed)
Commelina
dianthifolia
(Birdbill Dayflower)
Commelina
diffusa
(climbing dayflower)
Commelina
erecta
(whitemouth dayflower)
Commelina
spp.
(dayflowers)
Commelina
virginica
(Virginia Dayflower)
Commersonia
bartramia
(Brown Kurrajong)
Commersonia
spp.
Comptonia
peregrina
(Sweet Fern)
Comptonia
spp.
Condalia
hookeri
(Brasil)
Condalia
spp.
Condaliopsis
obtusifolia
(lotebush)
Condaliopsis
spp.
Condea
emoryi
(desert lavender)
Condea
spp.
Conium
maculatum
(poison hemlock)
Conium
spp.
(Hemlocks)
Conocarpus
erectus
(Green Buttonwood)
Conocarpus
spp.
Conocephalum
conicum
(Great Scented Liverwort)
Conocephalum
salebrosum
(Snakewort)
Conocephalum
spp.
(snakeworts)
Conoclinium
coelestinum
(Blue Mistflower)
Conoclinium
dissectum
(Palmleaf Mistflower)
Conoclinium
spp.
(mistflowers)
Conopholis
americana
(American cancer-root)
Conopholis
spp.
Conopodium
majus
(Pignut)
Conopodium
spp.
Conospermum
longifolium
(Smoke Bush)
Conospermum
spp.
Conospermum
taxifolium
(Paint Brush)
Convallaria
majalis
(lily of the valley)
Convallaria
spp.
(lilies of the valley)
Convolvulus
angustissimus
(Blushing Bindweed)
Convolvulus
arvensis
(field bindweed, morning glory)
Convolvulus
equitans
(Texas bindweed)
Convolvulus
spp.
(bindweeds)
Conyza
canadensis
(horseweed)
Conyza
spp.
(Fleabane)
Coprosma
hirtella
(Rough Coprosma)
Coprosma
quadrifida
(Prickly Currant-Bush)
Coprosma
repens
(Taupata)
Coprosma
spp.
(Coprosma)
Coptis
spp.
Coptis
trifolia
(threeleaf goldthread)
Corallina
officinalis
(Common Coralline)
Corallina
spp.
(Coral weed)
Corallorhiza
maculata
(spotted coralroot)
Corallorhiza
mertensiana
(Pacific coralroot)
Corallorhiza
spp.
(Coralroots)
Cordia
boissieri
(Anacahuita)
Cordia
spp.
(Manjack and geiger trees)
Cordyline
australis
(New Zealand cabbage tree)
Cordyline
fruticosa
(Ti Plant)
Cordyline
petiolaris
(Broad leaved Palm Lily)
Cordyline
rubra
(red-fruited palm lily)
Cordyline
spp.
(cabbage trees and allies)
Cordyline
stricta
(Slender Palm Lily)
Coreopsis
(Tickseed)
Coreopsis
grandiflora
'Early Sunrise'
(Early Sunrise Coreopsis)
Coreopsis
lanceolata
(Lance-Leaved Coreopsis)
Coreopsis
leavenworthii
(Leavenworth's Tickseed)
Coreopsis
'Limerock Ruby'
(Limerock Ruby Coreopsis)
Coreopsis
major
(Greater Tickseed)
Coreopsis
palmata
(Stiff Tickseed)
Coreopsis
rosea
(Pink Tickseed)
Coreopsis
tinctoria
(plains coreopsis)
Coreopsis
tripteris
(Tall Coreopsis)
Coreopsis
verticillata
'Grandiflora'
(Large-flowered Tickseed)
Coreopsis
verticillata
'Moonbeam'
(Moonbeam coreopsis, tickseed)
Coreopsis
verticillata
'Zagreb'
(Zagreb Coreopsis)
Corethrogyne
filaginifolia
(California Aster)
Corethrogyne
spp.
Coriandrum
sativum
(Cilantro)
Coriandrum
spp.
Cornus
alba
'Elegantissima'
(variegated Tartarian dogwood)
Cornus
alba
'Kesselringii'
(Kesselring's Dogwood)
Cornus
alternifolia
(Pagoda Dogwood)
Cornus
amomum
(silky dogwood)
Cornus
canadensis
(bunchberry)
Cornus
capitata
(Mountain Moon Dogwood Tree)
Cornus
controversa
'Variegata'
(Variegated Giant Dogwood)
Cornus
drummondii
(roughleaf dogwood)
Cornus
'Eddie'
s
White
Wonder'
(Eddie's White Wonder)
Cornus
florida
(eastern dogwood)
Cornus
florida
'Cherokee Brave'
(Cherokee Brave Dogwood)
Cornus
florida
'Cherokee Chief'
(Cherokee Chief Dogwood)
Cornus
florida
'Cherokee Princess'
(Cherokee Princess Dogwood)
Cornus
florida
'Rubra'
(pink dogwood)
Cornus
hongkongensis
(Hong Kong Dogwood)
Cornus
kousa
(kousa dogwood)
Cornus
kousa
'Satomi'
(Satomi Kousa Dogwood)
Cornus
macrophylla
(Large-leaved Dogwood)
Cornus
mas
(Cornelian cherry)
Cornus
nuttallii
(western dogwood, Pacific dogwood)
Cornus
racemosa
(Grey Twig Dogwood)
Cornus
sanguinea
(Common Dogwood)
Cornus
sericea
(red twig dogwood, red osier)
Cornus
sericea
(Red Twig Dogwood)
Cornus
sericea
'Baileyi'
(Bailey's Red-twig Dogwood)
Cornus
sericea
'Flaviramea'
(yellow twig dogwood)
Cornus
sericea
'Kelseyi'
(dwarf red twig dogwood)
Cornus
spp.
(dogwoods)
Cornus
unalaschkensis
(bunchberry)
Corokia
cotoneaster
(Wire-netting Bush)
Corokia
spp.
Coronidium
elatum
(white paper daisy)
Coronidium
scorpioides
(button everlasting)
Coronidium
spp.
Coronilla
spp.
(Crown vetch)
Correa
alba
(White Correa)
Correa
glabra
(rock correa)
Correa
reflexa
(Common Correa)
Correa
spp.
Cortaderia
selloana
(Pampas Grass)
Cortaderia
selloana
'Pumila'
(Dwarf Pampas Grass)
Cortaderia
spp.
(Pampas grasses)
Corybas
aconitiflorus
(Spurred Helmet-orchid)
Corybas
diemenicus
(veined helmet-orchid)
Corybas
incurvus
(slaty helmet-orchid)
Corybas
spp.
(Helmet orchids)
Corydalis
(fumewort)
Corydalis
aurea
(golden corydalis)
Corydalis
flavula
(Yellow Corydalis)
Corydalis
scouleri
(Scouler's fumewort)
Corydalis
solida
(Bird-in-a-bush)
Corylopsis
glabrescens
(Fragrant Winter Hazel)
Corylopsis
pauciflora
(winter hazel, buttercup winter hazel)
Corylopsis
sinensis
(Chinese Winter Hazel)
Corylopsis
spicata
(Spike Winter Hazel)
Corylopsis
spp.
Corylus
americana
(American Hazelnut)
Corylus
avellana
(Common Hazel)
Corylus
avellana
'Contorta'
(Harry Lauder's walking stick)
Corylus
colurna
(Turkish Hazelnut)
Corylus
cornuta
(hazel)
Corylus
cornuta
var.
californica
(western hazelnut)
Corylus
maxima
'Purpurea'
(purple‑leaf filbert)
Corylus
spp.
(hazels)
Corymbia
calophylla
(Marri)
Corymbia
citriodora
(Lemon-scented gum)
Corymbia
ficifolia
(Red-flowering gum)
Corymbia
gummifera
(Red Bloodwood)
Corymbia
intermedia
(Pink Bloodwood)
Corymbia
maculata
(Spotted Gum)
Corymbia
spp.
(Bloodgums)
Corymbia
tessellaris
(Carbeen)
Corymbia
torelliana
(cadaghi)
Corymbia
variegata
(Northern Spotted Gum)
Cosmos
atrosanguineus
(chocolate cosmos)
Cosmos
bipinnatus
(cosmos)
Cosmos
spp.
(Cosmoses)
Cosmos
sulphureus
(Yellow Cosmos)
Costus
spp.
(spiral gingers)
Cotinus
coggygria
(smoke tree, smoke bush)
Cotinus
coggygria
'Ancot'
(Golden Spirit Smoke Tree)
Cotinus
coggygria
Purpureus
Group
(purple-leaf smoke tree/bush)
Cotinus
coggygria
'Royal Purple'
(Royal Purple Smoke Tree)
Cotinus
'Grace'
(Grace smoke tree)
Cotinus
obovatus
(American Smoke Tree)
Cotinus
spp.
(smoketrees)
Cotoneaster
adpressus
'Little Gem'
(Little Gem Cotoneaster)
Cotoneaster
bullatus
(hollyberry cotoneaster)
Cotoneaster
buxifolius
(Boxwood Cotoneaster)
Cotoneaster
coriaceus
(Parney cotoneaster)
Cotoneaster
dammeri
(Bearberry Cotoneaster)
Cotoneaster
franchetii
(Franchet cotoneaster)
Cotoneaster
glaucophyllus
(Bright bead cotoneaster)
Cotoneaster
hodjingensis
(Hjelmqvist Cotoneaster)
Cotoneaster
horizontalis
(rock cotoneaster)
Cotoneaster
rehderi
(Bullate Cotoneaster)
Cotoneaster
salicifolius
(Willow-leaved Cotoneaster)
Cotoneaster
salicifolius
'Repens'
(creeping willowleaf cotoneaster)
Cotoneaster
simonsii
(Himalayan cotoneaster)
Cotoneaster
spp.
(Cotoneasters)
Cotoneaster
×
suecicus
(Swedish Cotoneaster)
Cotula
australis
(Common Cotula)
Cotula
coronopifolia
(brass buttons)
Cotula
spp.
Crambe
maritima
(Sea Kale)
Crambe
spp.
Craspedia
spp.
Craspedia
variabilis
(Common Billy buttons)
Crassocephalum
crepidioides
(redflower ragleaf)
Crassocephalum
spp.
Crassula
connata
(sand pygmyweed)
Crassula
decumbens
(Scilly Pigmyweed)
Crassula
helmsii
(New Zealand pygmyweed)
Crassula
ovata
(Jade Plant)
Crassula
sieberiana
(Australian Stonecrop)
Crassula
spp.
(Stonecrops)
Crataegus
douglasii
(Black Hawthorn)
Crataegus
gaylussacia
(Suksdorf's Hawthorn)
Crataegus
germanica
(Medlar)
Crataegus
laevigata
(English Hawthorn)
Crataegus
laevigata
'Paul'
s
Scarlet'
(Paul's Scarlet hawthorn)
Crataegus
marshallii
(parsley hawthorn)
Crataegus
monogyna
(common hawthorn)
Crataegus
mordenensis
(Morden Hawthorn)
Crataegus
phaenopyrum
(Washington thorn)
Crataegus
spp.
(hawthorns)
Crataegus
x
lavallei
(Lavalle hawthorn)
Crepis
biennis
(Rough Hawk's-beard)
Crepis
capillaris
(smooth hawk's-beard)
Crepis
spp.
(hawksbeards)
Crepis
vesicaria
(Beaked Hawksbeard)
Crinum
×
amabile
(Giant Spider Lily)
Crinum
americanum
(Southern Swamp Crinum)
Crinum
pedunculatum
(mangrove lily)
Crinum
spp.
(Swamplilies)
Crithmum
maritimum
(rock samphire)
Crithmum
spp.
Crocanthemum
scoparium
(peak rushrose)
Crocanthemum
spp.
(Frostweeds)
Crocosmia
(Montbretias)
Crocosmia
'Lucifer'
(Lucifer Crocosmia)
Crocosmia
spp.
(crocosmia)
Crocosmia
x
crocosmiiflora
'Lucifer'
(red crocosmia)
Crocus
(crocus)
Crocus
neapolitanus
(spring crocus)
Crocus
×
stellaris
(Dutch Yellow Crocus)
Crocus
tommasinianus
(Tommasini's Crocus)
Crossandra
spp.
(Crossandras)
Crotalaria
spectabilis
(Showy Rattlebox)
Crotalaria
spp.
(Rattlepods)
Croton
californicus
(California croton)
Croton
glandulosus
(Tropic Croton)
Croton
lindheimeri
(Lindheimer's Doveweed)
Croton
monanthogynus
(Prairie Tea)
Croton
setiger
(turkey mullein)
Croton
spp.
(Crotons)
Crowea
saligna
(willow-leaved crowea)
Crowea
spp.
Cruciata
laevipes
(Crosswort)
Cruciata
spp.
Cryphaea
heteromalla
(Lateral Cryphaea)
Cryphaea
spp.
Cryptandra
amara
(Bitter Cryptandra)
Cryptandra
spp.
Cryptandra
tomentosa
(prickly cryptandra)
Cryptantha
intermedia
(Clearwater cryptantha)
Cryptantha
spp.
(Annual Cryptanthas)
Cryptocarya
microneura
(murrogun)
Cryptocarya
spp.
Cryptocarya
triplinervis
(Brown Laurel)
Cryptogramma
crispa
(parsley fern)
Cryptogramma
spp.
Cryptomeria
japonica
(Japanese Cedar)
Cryptomeria
japonica
'Black Dragon'
(Black Dragon Japanese Cedar)
Cryptomeria
japonica
'Cristata'
(Japanese Crested Cedar)
Cryptomeria
japonica
'Elegans'
(Plume Cryptomeria)
Cryptomeria
japonica
'Globosa Nana'
(Globe Japanese Cedar)
Cryptomeria
japonica
'Pygmaea'
(Dwarf Japanese Cedar)
Cryptomeria
japonica
'Sekkan Sugi'
(Sekkan-Sugi cryptomeria)
Cryptomeria
japonica
'Yoshino'
(Yoshino Japanese Cedar)
Cryptomeria
spp.
Cryptostylis
erecta
(bonnet orchid)
Cryptostylis
leptochila
(small tongue-orchid)
Cryptostylis
spp.
Cryptostylis
subulata
(Large Tongue Orchid)
Cryptotaenia
canadensis
(honewort)
Cryptotaenia
spp.
Ctenidium
molluscum
(Comb-moss)
Ctenidium
spp.
Cucumis
sativus
'Marketmore 76'
(Marketmore 76 Cucumber)
Cucumis
sativus
'Straight Eight'
(Straight Eight Cucumber)
Cucumis
sativus
'Suyo Long'
(Suyo Long Cucumber)
Cucumis
spp.
(Melons & Cucumbers)
Cucurbita
foetidissima
(Buffalo Gourd)
Cucurbita
maxima
'Hubbard'
(Hubbard Winter Squash)
Cucurbita
moschata
'Butternut'
(Butternut Squash)
Cucurbita
pepo
'Acorn'
(Acorn Squash)
Cucurbita
pepo
'Black Beauty'
(Black Beauty Zucchini)
Cucurbita
pepo
'Delicata'
(Delicata Squash)
Cucurbita
pepo
'Pattypan'
(Pattypan Squash)
Cucurbita
pepo
'Yellow Crookneck'
(Yellow Crookneck Squash)
Cucurbita
spp.
(gourds)
Cunila
origanoides
(common dittany)
Cunila
spp.
Cunninghamia
lanceolata
(China Fir)
Cunninghamia
lanceolata
'Glauca'
(Blue China Fir)
Cunninghamia
spp.
Cupaniopsis
anacardioides
(Tuckeroo)
Cupaniopsis
parvifolia
(small-leaved tuckeroo)
Cupaniopsis
spp.
Cuphea
spp.
(Cigar Plants and Allies)
Cupressus
×
leylandii
(Leyland Cypress)
Cupressus
macrocarpa
'Goldcrest'
(Goldcrest Monterey Cypress)
Cupressus
sempervirens
(Italian Cypress)
Cupressus
sempervirens
'Stricta'
(Italian Cypress)
Cupressus
spp.
(cypresses)
Curcuma
spp.
(turmerics)
Cuscuta
californica
(California dodder)
Cuscuta
epithymum
(Clover Dodder)
Cuscuta
spp.
(dodders)
Cyanicula
caerulea
(blue finger-orchid)
Cyanicula
sericea
(Silky Blue Orchid)
Cyanicula
spp.
Cyanthillium
cinereum
(little ironweed)
Cyanthillium
spp.
Cyathea
australis
(rough tree-fern)
Cyathea
spp.
(scaly tree ferns)
Cyathophorum
bulbosum
(quill moss)
Cyathophorum
spp.
Cycas
circinalis
(queen sago)
Cycas
revoluta
(Sago Palm)
Cycas
spp.
(Cycads)
Cyclamen
coum
(Spring cyclamen)
Cyclamen
hederifolium
(ivy-leaved cyclamen)
Cyclamen
persicum
(Florist's Cyclamen)
Cyclamen
spp.
(Cyclamen)
Cyclophyllum
coprosmoides
(Coast Canthium)
Cyclophyllum
spp.
Cyclospermum
leptophyllum
(Marsh parsley)
Cyclospermum
spp.
Cycnogeton
procerus
(Water Ribbons)
Cycnogeton
spp.
Cydonia
oblonga
(Quince)
Cydonia
spp.
Cylindropuntia
acanthocarpa
(Buckhorn Cholla)
Cylindropuntia
bigelovii
(Teddybear Cholla)
Cylindropuntia
echinocarpa
(Silver Cholla)
Cylindropuntia
fosbergii
(Mason Valley Cholla)
Cylindropuntia
fulgida
(Chain-fruit Cholla)
Cylindropuntia
kleiniae
(Klein's Cholla)
Cylindropuntia
leptocaulis
(Christmas cholla)
Cylindropuntia
prolifera
(Coast Cholla)
Cylindropuntia
ramosissima
(Branched Pencil Cholla)
Cylindropuntia
spp.
(chollas)
Cylindropuntia
whipplei
(Whipple's Cholla)
Cymbalaria
muralis
(Ivy-leaved toadflax)
Cymbalaria
spp.
Cymbidium
canaliculatum
(Channelled boat-lip orchid)
Cymbidium
madidum
(Arrowroot Orchid)
Cymbidium
spp.
(Boat Orchids)
Cymbidium
suave
(Snake Orchid)
Cymbonotus
preissianus
(Austral bear’s-ears)
Cymbonotus
spp.
Cymbopogon
citratus
(Lemongrass)
Cymbopogon
refractus
(barbwire grass)
Cymbopogon
spp.
(Lemon Grasses)
Cynanchica
pyrenaica
(Squinancywort)
Cynanchica
spp.
Cynanchum
laeve
(honey-vine climbing milkweed)
Cynanchum
spp.
Cynara
cardunculus
(artichoke, cardoon)
Cynara
spp.
Cynodon
dactylon
(Bermuda Grass)
Cynodon
spp.
(Bermuda Grasses)
Cynoglossum
australe
(Australian Hound's-tongue)
Cynoglossum
officinale
(hound's-tongue)
Cynoglossum
spp.
(Hound's-tongues)
Cynosurus
cristatus
(crested dogtail grass)
Cynosurus
spp.
Cyperus
croceus
(Baldwin's Flatsedge)
Cyperus
eragrostis
(tall flatsedge)
Cyperus
esculentus
(yellow nutsedge)
Cyperus
odoratus
(Fragrant flatsedge)
Cyperus
polystachyos
(Bunchy flat-sedge)
Cyperus
rotundus
(Purple Nutsedge)
Cyperus
spp.
(Flatsedges)
Cyperus
strigosus
(straw-colored flatsedge)
Cypripedium
(Lady's slipper orchid)
Cypripedium
acaule
(pink lady's slipper)
Cypripedium
parviflorum
(yellow lady's slipper)
Cypripedium
spp.
(lady's slipper)
Cyrilla
racemiflora
(Swamp titi)
Cyrilla
spp.
Cyrtomium
caryotideum
(Fish-tail Holly Fern)
Cyrtomium
falcatum
(Japanese Holly Fern)
Cyrtomium
fortunei
(Fortune's Holly Fern)
Cyrtomium
macrophyllum
(Large-leaved Holly Fern)
Cyrtomium
spp.
Cyrtostachys
renda
(Sealing Wax Palm)
Cyrtostachys
spp.
Cyrtostylis
reniformis
(Gnat orchid)
Cyrtostylis
robusta
(large gnat-orchid)
Cyrtostylis
spp.
Cystopteris
bulbifera
(bulblet fern)
Cystopteris
fragilis
(brittle bladderfern)
Cystopteris
protrusa
(lowland brittle fern)
Cystopteris
spp.
(fragile ferns)
Cytisus
scoparius
(Scotch broom)
Cytisus
spp.
(brooms)
Daboecia
cantabrica
(Irish Heath)
Daboecia
cantabrica
f.
alba
(White Irish Heath)
Daboecia
spp.
Dactylis
glomerata
(orchard grass)
Dactylis
spp.
Dactylorhiza
fuchsii
(Common Spotted Orchid)
Dactylorhiza
incarnata
(Early Marsh-orchid)
Dactylorhiza
maculata
(heath spotted orchid)
Dactylorhiza
praetermissa
(Southern Marsh-orchid)
Dactylorhiza
purpurella
(Northern Marsh-orchid)
Dactylorhiza
spp.
(Marsh orchids)
Dactylorhiza
viridis
(Frog Orchid)
Dahlia
'Cafe au Lait'
(Cafe au Lait Dahlia)
Dahlia
Hybrids
(dahlia)
Dahlia
merckii
(Bedding Dahlia)
Dahlia
pinnata
(Garden Dahlia)
Dahlia
spp.
(Dahlias)
Dalea
candida
(white prairie clover)
Dalea
formosa
(feather dalea)
Dalea
purpurea
(purple prairie clover)
Dalea
spp.
(prairie clovers)
Dampiera
purpurea
(Purple Dampiera)
Dampiera
spp.
(dampiera)
Dampiera
stricta
(Blue Dampiera)
Danthonia
spicata
(Poverty Oat Grass)
Danthonia
spp.
Daphne
burkwoodii
(Burkwood Daphne)
Daphne
caucasica
(Caucasian Daphne)
Daphne
cneorum
(Rose Daphne)
Daphne
laureola
(spurge daphne)
Daphne
mezereum
(February daphne)
Daphne
odora
(Winter Daphne)
Daphne
odora
'Aureomarginata'
(variegated winter daphne)
Daphne
spp.
Daphne
tangutica
(Tangut Daphne)
Daphne
x
transatlantica
'Summer Ice'
(Summer Ice hybrid daphne)
Daphniphyllum
macropodum
(Himalayan Daphniphyllum)
Daphniphyllum
spp.
Darlingtonia
californica
(California pitcher plant)
Darlingtonia
spp.
Darmera
peltata
(umbrella plant)
Darmera
spp.
Darwinia
fascicularis
(clustered darwinia)
Darwinia
spp.
Dasiphora
fruticosa
(potentilla, cinquefoil)
Dasiphora
spp.
(shrubby cinquefoils)
Dasylirion
spp.
(sotols)
Dasylirion
texanum
(Texas sotol)
Dasylirion
wheeleri
(Wheeler sotol)
Dasyochloa
pulchella
(Fluffgrass)
Dasyochloa
spp.
Datura
metel
(Devil's Trumpet Plant)
Datura
spp.
(Devil's Trumpets)
Datura
stramonium
(jimsonweed)
Datura
wrightii
(Sacred Datura)
Daucus
carota
(Queen Ann's lace)
Daucus
carota
'Chantenay'
(Chantenay Carrot)
Daucus
carota
'Danvers'
(Danvers Carrot)
Daucus
carota
'Imperator'
(Imperator Carrot)
Daucus
carota
'Nantes'
(Nantes Carrot)
Daucus
carota
'Rainbow'
(Rainbow Carrot Mix)
Daucus
carota
subsp.
sativus
'Chantenay'
(Chantenay Carrot)
Daucus
carota
subsp.
sativus
'Danvers 126'
(Danvers 126 Carrot)
Daucus
carota
subsp.
sativus
'Imperator'
(Imperator Carrot)
Daucus
carota
subsp.
sativus
'Nantes'
(Nantes Carrot)
Daucus
carota
subsp.
sativus
'Rainbow'
(Rainbow Carrots)
Daucus
glochidiatus
(Australian Carrot)
Daucus
pusillus
(American wild carrot)
Daucus
spp.
(carrots)
Davallia
spp.
(rabbit's foot ferns)
Davidia
involucrata
(dove tree)
Davidia
spp.
Daviesia
brevifolia
(Leafless Bitter-pea)
Daviesia
latifolia
(hop bitter-pea)
Daviesia
leptophylla
(narrow-leaf bitter-pea)
Daviesia
spp.
Daviesia
ulicifolia
(gorse bitter pea)
Daviesia
villifera
(prickly daviesia)
Dawsonia
spp.
Dawsonia
superba
(giant moss)
Decodon
spp.
Decodon
verticillatus
(swamp loosestrife)
Deinandra
fasciculata
(Clustered Tarweed)
Deinandra
spp.
Delairea
odorata
(Cape-ivy)
Delairea
spp.
Delonix
regia
(Royal Poinciana)
Delonix
spp.
(Flame trees)
Delosperma
congestum
'Gold Nugget'
(Gold Nugget Ice Plant)
Delosperma
×
'Fire Spinner'
(Fire Spinner Ice Plant)
Delosperma
spp.
(Sheepfigs)
Delosperma
sutherlandii
(Sutherland's Ice Plant)
Delphinium
(larkspurs)
Delphinium
ajacis
(doubtful knight's-spur)
Delphinium
carolinianum
(Wild Blue Larkspur)
Delphinium
Hybrids
(delphinium)
Delphinium
menziesii
(Menzies' Larkspur)
Delphinium
nudicaule
(Red larkspur)
Delphinium
nuttallianum
(Upland Larkspur)
Delphinium
patens
(Zigzag Larkspur)
Delphinium
spp.
(delphinium)
Delphinium
tricorne
(dwarf larkspur)
Delphinium
trolliifolium
(Streambank Larkspur)
Dendroalsia
abietina
(dendroalsia moss)
Dendroalsia
spp.
Dendrobium
kingianum
(pink rock orchid)
Dendrobium
linguiforme
(tongue orchid)
Dendrobium
speciosum
(rock orchid)
Dendrobium
spp.
(Dendrobium Orchids)
Dendrocnide
excelsa
(Giant Stinging Tree)
Dendrocnide
spp.
Dendrolycopodium
dendroideum
(prickly tree-clubmoss)
Dendrolycopodium
obscurum
(flat-branched tree-clubmoss)
Dendrolycopodium
spp.
(tree-clubmosses)
Dendromecon
rigida
(Bush Poppy)
Dendromecon
spp.
Dennstaedtia
punctilobula
(Hay-Scented Fern)
Dennstaedtia
spp.
Deparia
acrostichoides
(silvery glade fern)
Deparia
spp.
Dermatophyllum
secundiflorum
(Texas mountain laurel)
Dermatophyllum
spp.
Deschampsia
cespitosa
(tufted hairgrass)
Deschampsia
flexuosa
(Wavy Hair Grass)
Deschampsia
spp.
Descurainia
(Tansymustards)
Descurainia
pinnata
(Western Tansymustard)
Descurainia
sophia
(flixweed)
Descurainia
spp.
(tansy mustard)
Desmanthus
illinoensis
(Illinois bundleflower)
Desmanthus
spp.
(bundleflowers)
Desmodium
canadense
(showy tick-trefoil)
Desmodium
incanum
(creeping beggarweed)
Desmodium
paniculatum
(panicled ticktrefoil)
Desmodium
rhytidophyllum
(Rusty tick-trefoil)
Desmodium
spp.
(ticktrefoils)
Deutzia
gracilis
(slender deutzia)
Deutzia
spp.
Dianella
brevicaulis
(Coast Flax-Lily)
Dianella
longifolia
(Pale Flax-Lily)
Dianella
revoluta
(Blueberry Lily)
Dianella
spp.
(flax-lilies)
Dianella
tasmanica
(Tasman Flax-lily)
Dianthus
arenarius
(sand pink)
Dianthus
armeria
(Deptford pink)
Dianthus
barbatus
(sweet William)
Dianthus
carthusianorum
(Carthusian Pink)
Dianthus
×
'Coconut Surprise'
(Coconut Surprise Dianthus)
Dianthus
cruentus
(Blood Pink)
Dianthus
deltoides
(Maiden Pink)
Dianthus
gratianopolitanus
(pinks)
Dianthus
spp.
(carnations)
Dianthus
×
'Sugar Plum'
(Sugar Plum Dianthus)
Diaperia
prolifera
(flathead rabbit tobacco)
Diaperia
spp.
Diascia
spp.
(Twinspur)
Dicentra
canadensis
(squirrel corn)
Dicentra
cucullaria
(Dutchman's breeches)
Dicentra
formosa
(Pacific bleeding heart)
Dicentra
formosa
'Bacchanal'
(Bacchanal Bleeding Heart)
Dicentra
'King of Hearts'
(King of Hearts Bleeding Heart)
Dicentra
'Luxuriant'
(Luxuriant Bleeding Heart)
Dicentra
spectabilis
(Bleeding Heart)
Dicentra
spp.
(Bleedinghearts)
Dichanthelium
clandestinum
(deertongue)
Dichanthelium
oligosanthes
(Heller's Rosette Grass)
Dichanthelium
spp.
(rosette grasses)
Dichelostemma
congestum
(Ookow)
Dichelostemma
spp.
Dichondra
carolinensis
(Carolina ponysfoot)
Dichondra
repens
(kidney weed)
Dichondra
spp.
(ponysfoots)
Dichorisandra
spp.
Dichorisandra
thyrsiflora
(Blue Ginger)
Dicksonia
antarctica
(man fern)
Dicksonia
spp.
Dicranella
heteromalla
(Silky Forklet-moss)
Dicranella
spp.
Dicranoweisia
cirrata
(Common Pincushion)
Dicranoweisia
spp.
Dicranum
scoparium
(Broom Forkmoss)
Dicranum
spp.
(Forkmosses)
Didiscus
spp.
(Blue lace flower)
Didymodon
spp.
(Didymodon mosses)
Dieffenbachia
seguine
(Dumb Cane)
Dieffenbachia
spp.
(mother-in-law's-tongues)
Dierama
pulcherrimum
(Angel's Fishing Rod)
Dierama
spp.
Diervilla
lonicera
(northern bush honeysuckle)
Diervilla
rivularis
(Bush Honeysuckle)
Diervilla
×
splendens
(Bush Honeysuckle)
Diervilla
spp.
Dieteria
canescens
(Hoary Tansyaster)
Dieteria
spp.
(tansyasters)
Dietes
bicolor
(Yellow Fortnight Lily)
Dietes
grandiflora
(Large Fortnight Lily)
Dietes
spp.
(Fortnight Lilies)
Digitalis
(Foxglove)
Digitalis
ferruginea
(Rusty Foxglove)
Digitalis
grandiflora
(Large Yellow Foxglove)
Digitalis
isabelliana
(Spanish Foxglove)
Digitalis
laevigata
(Grecian Foxglove)
Digitalis
lutea
(yellow foxglove)
Digitalis
obscura
(Sunset Foxglove)
Digitalis
parviflora
(Small-flowered Foxglove)
Digitalis
purpurea
(common foxglove)
Digitalis
purpurea
'Excelsior'
(Excelsior Foxglove)
Digitalis
thapsi
(Spanish Foxglove)
Digitaria
sanguinalis
(Hairy Crabgrass)
Digitaria
spp.
(crabgrasses, cottontops, and allies)
Dillwynia
cinerascens
(grey parrot pea)
Dillwynia
floribunda
(Parrot Pea)
Dillwynia
glaberrima
(Smooth Parrot-pea)
Dillwynia
hispida
(red parrot-pea)
Dillwynia
phylicoides
(small-leaf parrot-pea)
Dillwynia
retorta
(heathy parrot pea)
Dillwynia
sericea
(showy parrot-pea)
Dillwynia
spp.
(egg and bacon peas)
Dimorphotheca
spp.
(Afro-Australian daisies)
Diodia
spp.
Diodia
virginiana
(buttonweed)
Dioscorea
bulbifera
(air potato)
Dioscorea
communis
(Black Bryony)
Dioscorea
polystachya
(Chinese yam)
Dioscorea
spp.
(Cinnamon vines)
Dioscorea
transversa
(Common Yam Vine)
Dioscorea
villosa
(wild yam)
Diospyros
geminata
(scaly ebony)
Diospyros
kaki
(Japanese Persimmon)
Diospyros
lotus
(Date Plum)
Diospyros
spp.
(persimmons)
Diospyros
texana
(Texas Persimmon)
Diospyros
virginiana
(American Persimmon)
Diphasiastrum
digitatum
(fan clubmoss)
Diphasiastrum
spp.
(Ground cedars)
Diphylleia
cymosa
(Umbrella Leaf)
Diphylleia
spp.
Diplacus
aurantiacus
(orange bush monkeyflower)
Diplacus
×
australis
(San Diego Monkeyflower)
Diplacus
longiflorus
(southern bush monkeyflower)
Diplacus
puniceus
(red bush monkeyflower)
Diplacus
spp.
(Bush Monkeyflowers)
Diplarrena
moraea
(Australian white iris)
Diplarrena
spp.
(White flag iris)
Diploglottis
australis
(Native Tamarind)
Diploglottis
spp.
Diplophyllum
albicans
(White Earwort)
Diplophyllum
spp.
Diplotaxis
muralis
(annual wall-rocket)
Diplotaxis
spp.
(Wall-Rockets)
Diplotaxis
tenuifolia
(Perennial Wall-rocket)
Dipodium
punctatum
(Blotched Hyacinth-Orchid)
Dipodium
roseum
(Rosy Hyacinth Orchid)
Dipodium
spp.
Dipodium
variegatum
(Slender Hyacinth-Orchid)
Dipogon
lignosus
(Okie bean)
Dipogon
spp.
Dipsacus
fullonum
(common teasel)
Dipsacus
laciniatus
(cutleaf teasel)
Dipsacus
pilosus
(small teasel)
Dipsacus
sativus
(fuller's teasel)
Dipsacus
spp.
(teasels)
Dipterostemon
capitatus
(blue dicks)
Dipterostemon
spp.
Dirca
palustris
(eastern leatherwood)
Dirca
spp.
Disa
bracteata
(Bract Disa)
Disanthus
cercidifolius
(Disanthus)
Disanthus
spp.
Disa
spp.
Disphyma
crassifolium
(Purple Dewplant)
Disphyma
spp.
Disporopsis
pernyi
(Pernyi's Disporopsis)
Disporopsis
spp.
Disporum
spp.
Disporum
uniflorum
(Yellow Fairybells)
Distichlis
distichophylla
(Australian Salt-grass)
Distichlis
spicata
(Saltgrass)
Distichlis
spp.
Distimake
dissectus
(Alamo vine)
Distimake
spp.
Distylium
spp.
(Isu tree)
Dittrichia
graveolens
(Stinkwort)
Dittrichia
spp.
Diuris
chryseopsis
(Common Golden Moths)
Diuris
orientis
(Wallflower orchid)
Diuris
pardina
(Leopard Orchid)
Diuris
spp.
(Double Tails)
Diuris
sulphurea
(Tiger Orchid)
Dodecatheon
hendersonii
(Broad-leaved Shooting Star)
Dodecatheon
pulchellum
(Pretty Shooting Star)
Dodonaea
spp.
(Hop-bushes)
Dodonaea
triquetra
(Common Hop Bush)
Dodonaea
viscosa
(Akeake)
Dodonaea
viscosa
'Purpurea'
(Purple Hop Bush)
Doellingeria
spp.
Doellingeria
umbellata
(flat-top white aster)
Dolichandra
spp.
Dolichandra
unguis-cati
(Catclaw vine)
Doodia
aspera
(Prickly Rasp fern)
Doodia
caudata
(Small Rasp Fern)
Doodia
spp.
Doronicum
(leapard's bane)
Doronicum
pardalianches
(Leopard's-bane)
Doryanthes
excelsa
(Gymea Lily)
Doryanthes
spp.
Draba
aizoides
(Yellow Whitlow Grass)
Draba
spp.
(Drabas)
Draba
verna
(Common Whitlowgrass)
Dracaena
fragrans
(Corn Plant)
Dracaena
marginata
(Dragon Tree)
Dracaena
masoniana
(Whale Fin Snake Plant)
Dracaena
reflexa
(Song of India)
Dracaena
spp.
(Dragon Trees)
Dracaena
zeylanica
(Ceylon Bowstring Hemp)
Dracocephalum
grandiflorum
(Large-flowered Dragonhead)
Dracocephalum
spp.
Dracophyllum
secundum
(necklace heath)
Dracophyllum
spp.
Dracunculus
spp.
Dracunculus
vulgaris
(dragon arum)
Drosanthemum
spp.
(Dewfigs)
Drosera
aberrans
(Scented Sundew)
Drosera
anglica
(Great Sundew)
Drosera
auriculata
(Tall sundew)
Drosera
binata
(Fork-leaved Sundew)
Drosera
burmanni
(tropical sundew)
Drosera
capillaris
(Pink Sundew)
Drosera
collina
Drosera
glanduligera
(Pimpernel sundew)
Drosera
gunniana
(Pale Sundew)
Drosera
hookeri
(Grassland Sundew)
Drosera
intermedia
(spoonleaf sundew)
Drosera
macrantha
(Bridal Rainbow)
Drosera
pallida
(Pale Rainbow)
Drosera
planchonii
(Climbing Sundew)
Drosera
pygmaea
(pygmy sundew)
Drosera
rotundifolia
(round-leaved sundew)
Drosera
spatulata
(Rosy Sundew)
Drosera
spp.
(Sundews)
Drosera
whittakeri
(Whittaker's sundew)
Drymocallis
arguta
(Tall Cinquefoil)
Drymocallis
glandulosa
(Sticky Cinquefoil)
Drymocallis
spp.
(Sticky cinquefoils)
Drynaria
rigidula
(basket fern)
Drynaria
spp.
Dryopteris
(wood ferns)
Dryopteris
affinis
(Golden-scaled Male-fern)
Dryopteris
arguta
(coastal woodfern)
Dryopteris
atrata
(Shaggy Shield Fern)
Dryopteris
carthusiana
(spinulose wood fern)
Dryopteris
crassirhizoma
(Thick-stemmed Wood Fern)
Dryopteris
cycadina
(Shaggy Wood Fern)
Dryopteris
dilatata
(broad buckler-fern)
Dryopteris
erythrosora
(autumn fern)
Dryopteris
expansa
(coast shield fern)
Dryopteris
filix-mas
(Male Fern)
Dryopteris
intermedia
(intermediate wood fern)
Dryopteris
lepidopoda
(Sunset Fern)
Dryopteris
marginalis
(marginal wood fern)
Dryopteris
sieboldii
(Siebold's Wood Fern)
Dryopteris
spp.
(Mixed Hardy Ferns)
Dryopteris
wallichiana
(Wallich's Wood Fern)
Drypetes
deplanchei
(Yellow Tulipwood)
Drypetes
spp.
Duboisia
myoporoides
(corkwood)
Duboisia
spp.
Dudleya
cymosa
(Canyon liveforever)
Dudleya
edulis
(Fingertips)
Dudleya
farinosa
(Bluff Lettuce)
Dudleya
lanceolata
(lanceleaf liveforever)
Dudleya
pulverulenta
(Chalk Dudleya)
Dudleya
spp.
(Liveforever)
Dulichium
arundinaceum
(Three-way Sedge)
Dulichium
spp.
Duma
florulenta
(Tangled Lignum)
Duma
spp.
Duranta
erecta
(Golden Dewdrop)
Duranta
spp.
(golden dewdrops)
Dymondia
spp.
(Silver carpet)
Dypsis
lutescens
(Areca Palm)
Dypsis
spp.
(golden cane palm)
Dyschoriste
nagchana
Dyschoriste
spp.
Dysphania
ambrosioides
(Mexican tea)
Dysphania
spp.
(wormseed)
Eccremocarpus
scaber
(Chilean glory vine)
Eccremocarpus
spp.
(Chilean glory flower)
Echeveria
elegans
(Mexican Gem)
Echeveria
spp.
(echeveria)
Echinacea
angustifolia
(Narrow-leaved Coneflower)
Echinacea
×
'Cheyenne Spirit'
(Cheyenne Spirit Coneflower)
Echinacea
Hybrids
(coneflower)
Echinacea
'Kim'
s
Knee
High'
(Kim's Knee High Coneflower)
Echinacea
pallida
(Pale Purple Coneflower)
Echinacea
paradoxa
(Yellow Coneflower)
Echinacea
purpurea
(Purple Coneflower)
Echinacea
purpurea
'Bravado'
(Bravado Purple Coneflower)
Echinacea
purpurea
'Magnus'
(Magnus Purple Coneflower)
Echinacea
purpurea
'PowWow White'
(PowWow White Coneflower)
Echinacea
purpurea
'PowWow Wild Berry'
(PowWow Wild Berry Coneflower)
Echinacea
purpurea
'Ruby Star'
(Ruby Star Coneflower)
Echinacea
purpurea
'Sombrero Salsa Red'
(Sombrero Salsa Red Coneflower)
Echinacea
purpurea
'White Swan'
(White Swan Coneflower)
Echinacea
simulata
(Wavy-Leaved Purple Coneflower)
Echinacea
spp.
(coneflowers)
Echinochloa
crus-galli
(barnyardgrass)
Echinochloa
spp.
(Barnyard Grasses)
Echinocystis
lobata
(prickly cucumber)
Echinocystis
spp.
Echinops
bannaticus
(Blue Globe Thistle)
Echinops
exaltatus
(Russian Globe Thistle)
Echinopsis
spp.
(South American hedgehog cactuses)
Echinops
ruthenicus
(Russian Globe Thistle)
Echinops
sphaerocephalus
(Great Globe Thistle)
Echinops
spp.
(Globe thistles)
Echium
candicans
(Pride of Madeira)
Echium
pininana
(Giant Viper's-bugloss)
Echium
plantagineum
(purple viper's-bugloss)
Echium
spp.
(Viper's-buglosses)
Echium
vulgare
(blueweed)
Echium
webbii
(Webb's Pride of Tenerife)
Echium
wildpretii
(tower of jewels)
Eclipta
prostrata
(False Daisy)
Eclipta
spp.
Edgeworthia
chrysantha
(edgeworthia, paperbush)
Edgeworthia
spp.
Edraianthus
graminifolius
(Grassy Bells)
Edraianthus
spp.
Egeria
densa
(Brazilian egeria)
Egeria
spp.
Ehretia
anacua
(Anacua)
Ehretia
spp.
(Ehretias)
Ehrharta
erecta
(panic veldtgrass)
Ehrharta
longiflora
(longflower veldtgrass)
Ehrharta
spp.
Elaeagnus
angustifolia
(Russian olive)
Elaeagnus
pungens
(silverberry)
Elaeagnus
pungens
'Maculata'
(Golden Variegated Elaeagnus)
Elaeagnus
spp.
(oleasters)
Elaeagnus
umbellata
(autumn olive)
Elaeocarpus
grandis
(blue quandong)
Elaeocarpus
obovatus
(Hard Quandong)
Elaeocarpus
reticulatus
(Blueberry ash)
Elaeocarpus
spp.
Elaeodendron
australe
(Red-fruited Olive Plum)
Elaeodendron
spp.
Elaphoglossum
spp.
(tongueferns)
Elegia
spp.
(Goldreeds)
Eleocharis
ovata
(Ovoid Spikerush)
Eleocharis
palustris
(Common Spikerush)
Eleocharis
spp.
(spikerushes)
Elephantopus
carolinianus
(leafy elephant's-foot)
Elephantopus
spp.
(Elephant's Feet)
Elephantopus
tomentosus
(common elephant's-foot)
Eleusine
indica
(Goose Grass)
Eleusine
spp.
Eleutherococcus
spp.
(Eleuthero)
Elleanthus
spp.
(Elleanthus orchids)
Elliottia
pyroliflora
(copperbush)
Elliottia
spp.
Elsholtzia
spp.
Elsholtzia
stauntonii
(Mint Shrub)
Elymus
athericus
(sea couch)
Elymus
canadensis
(Canada wild rye)
Elymus
elymoides
(Squirreltail)
Elymus
glaucus
(blue wildrye)
Elymus
hystrix
(Bottlebrush Grass)
Elymus
magellanicus
(Magellan Wheatgrass)
Elymus
repens
(quackgrass)
Elymus
spp.
(wild ryes and wheatgrasses)
Elymus
virginicus
(Virginia wildrye)
Elythranthera
brunonis
(purple enamel orchid)
Elythranthera
spp.
Embelia
australiana
(Embelia)
Embelia
spp.
Embothrium
coccineum
(Chilean fire tree)
Embothrium
spp.
Emilia
fosbergii
(Red Tasselflower)
Emilia
sonchifolia
(lilac tasselflower)
Emilia
spp.
(Tasselflowers)
Emmenanthe
penduliflora
(whispering bells)
Emmenanthe
spp.
Empetrum
nigrum
(black crowberry)
Empetrum
spp.
Encelia
californica
(California brittlebush)
Encelia
farinosa
(Brittlebush)
Encelia
spp.
(brittlebushes)
Enchylaena
spp.
Enchylaena
tomentosa
(Barrier Saltbush)
Enemion
biternatum
(false rue anemone)
Enemion
spp.
Engelmannia
peristenia
(Engelmann daisy)
Engelmannia
spp.
Enkianthus
campanulatus
(enkianthus)
Enkianthus
perulatus
(White Enkianthus)
Enkianthus
serrulatus
(white bell enkianthus)
Enkianthus
spp.
Ensete
spp.
Ensete
ventricosum
(Ethiopian Banana)
Entodon
seductrix
(seductive entodon moss)
Entodon
spp.
(Entodon mosses)
Entolasia
spp.
Entolasia
stricta
(Wiry Panic)
Epacris
impressa
(Common Heath)
Epacris
longiflora
(Fuchsia Heath)
Epacris
microphylla
(Coral Heath)
Epacris
obtusifolia
(blunt-leaf heath)
Epacris
pulchella
(New South Wales Coral Heath)
Epacris
spp.
Ephedra
spp.
(Jointfirs)
Ephedra
viridis
(Green Ephedra)
Epidendrum
ibaguense
(Reed Orchid)
Epidendrum
spp.
(epidendrums)
Epifagus
spp.
Epifagus
virginiana
(Beechdrops)
Epigaea
repens
(trailing arbutus)
Epigaea
spp.
Epilobium
brachycarpum
(panicled willowherb)
Epilobium
brunnescens
(New Zealand Willowherb)
Epilobium
canum
(California fuchsia)
Epilobium
ciliatum
(common willowherb (native))
Epilobium
coloratum
(cinnamon willowherb)
Epilobium
hirsutum
(Great Willowherb)
Epilobium
montanum
(Broad-leaved Willowherb)
Epilobium
parviflorum
(Hoary Willowherb)
Epilobium
spp.
(willowherbs)
Epilobium
tetragonum
(Square-stemmed Willowherb)
Epimedium
acuminatum
(Pointed-leaved Barrenwort)
Epimedium
'Amber Queen'
(Barrenwort)
Epimedium
davidii
(David's Barrenwort)
Epimedium
grandiflorum
'Lilafee'
(Barrenwort)
Epimedium
grandiflorum
'White Queen'
(Barrenwort)
Epimedium
pinnatum
ssp.
colchicum
(epimedium-pinnatum-ssp-colchicum)
Epimedium
pubigerum
(Barrenwort)
Epimedium
spp.
(barrenworts)
Epimedium
ssp.
(barrenwort)
Epimedium
x
perralchicum
'Frohnleiten'
(Frohnleiten Epimedium)
Epimedium
x
rubrum
(Red Barrenwort)
Epipactis
gigantea
(Stream Orchid)
Epipactis
helleborine
(Broad-leaved helleborine)
Epipactis
palustris
(Marsh Helleborine)
Epipactis
spp.
(Helleborines)
Epiphyllum
chrysocardium
(Fern Leaf Cactus)
Epiphyllum
spp.
Epipremnum
aureum
(Golden Pothos)
Epipremnum
aureum
'Marble Queen'
(Marble Queen Pothos)
Epipremnum
aureum
'N'
Joy'
(N'Joy Pothos)
Epipremnum
pinnatum
(Dragon Tail Plant)
Epipremnum
spp.
(pothos)
Episcia
cupreata
(Episcia Flame Violet)
Episcia
spp.
(Flame Violets)
Equisetum
arvense
(common horsetail (native))
Equisetum
×
ferrissii
(Ferriss' horsetail)
Equisetum
fluviatile
(water horsetail)
Equisetum
hyemale
(scouring rush)
Equisetum
laevigatum
(smooth horsetail)
Equisetum
palustre
(marsh horsetail)
Equisetum
spp.
(horsetails)
Equisetum
sylvaticum
(wood horsetail)
Equisetum
telmateia
(great horsetail)
Eragrostis
curvula
(African love grass)
Eragrostis
spectabilis
(Purple Lovegrass)
Eragrostis
spp.
(Lovegrasses)
Eranthis
hyemalis
(Winter Aconite)
Eranthis
spp.
Erechtites
hieraciifolius
(American burnweed)
Erechtites
spp.
Eremalche
rotundifolia
(desert fivespot)
Eremalche
spp.
Eremochloa
ophiuroides
(Centipede Grass)
Eremochloa
ophiuroides
(Centipede Grass)
Eremochloa
spp.
Eremophila
debilis
(Winter Apple)
Eremophila
glabra
(Common Emu-Bush)
Eremophila
longifolia
(Weeping Emubush)
Eremophila
nivea
(Silky Emu Bush)
Eremophila
spp.
Eremothera
boothii
(Booth's Evening Primrose)
Eremothera
spp.
Erica
(Heaths)
Erica
carnea
(Heath)
Erica
lusitanica
(Portuguese Heath)
Ericameria
ericoides
(California Goldenbush)
Ericameria
linearifolia
(narrowleaf goldenbush)
Ericameria
nauseosa
(Rubber Rabbitbrush)
Ericameria
spp.
(goldenbushes)
Erica
spp.
(heath)
Erica
tetralix
(Cross-leaved Heath)
Erigenia
bulbosa
(harbinger of spring)
Erigenia
spp.
Erigeron
acris
(bitter fleabane)
Erigeron
annuus
(annual fleabane)
Erigeron
bonariensis
(Flax-leaved Horseweed)
Erigeron
canadensis
(horseweed)
Erigeron
compositus
(cut-leaf fleabane)
Erigeron
divergens
(spreading fleabane)
Erigeron
floribundus
(Tall Fleabane)
Erigeron
foliosus
(Leafy Fleabane)
Erigeron
glacialis
(Subalpine Fleabane)
Erigeron
glaucus
(Seaside Fleabane)
Erigeron
karvinskianus
(Mexican Fleabane)
Erigeron
karvinskianus
spp.
(Mexican fleabane)
Erigeron
modestus
(Plains fleabane)
Erigeron
peregrinus
(Wandering Fleabane)
Erigeron
philadelphicus
(Philadelphia Fleabane)
Erigeron
pulchellus
(robin's-plantain)
Erigeron
quercifolius
(oakleaf fleabane)
Erigeron
speciosus
(Showy Fleabane)
Erigeron
spp.
(fleabanes and horseweeds)
Erigeron
strigosus
(daisy fleabane)
Erigeron
sumatrensis
(tropical horseweed)
Erinus
alpinus
(Fairy Foxglove)
Erinus
spp.
Eriobotrya
japonica
(Loquat)
Eriobotrya
spp.
(Loquats)
Eriocapitella
hupehensis
(Hubei Anemone)
Eriocapitella
×
hybrida
(Japanese Anemone)
Eriocapitella
spp.
(Fall-blooming anemones)
Eriocephalus
spp.
(Kapokbushes)
Eriochilus
cucullatus
(Parson's Bands)
Eriochilus
spp.
Eriocoma
hymenoides
(Sand Ricegrass)
Eriocoma
spp.
Eriodictyon
californicum
(California yerba santa)
Eriodictyon
crassifolium
(Thick-leaved Yerba Santa)
Eriodictyon
spp.
(yerba santa)
Eriogonum
compositum
(Arrowleaf Buckwheat)
Eriogonum
fasciculatum
(California Buckwheat)
Eriogonum
heracleoides
(Parsnip-flowered Buckwheat)
Eriogonum
inflatum
(Desert Trumpet)
Eriogonum
latifolium
(Seaside Buckwheat)
Eriogonum
nudum
(Naked Buckwheat)
Eriogonum
ovalifolium
(cushion buckwheat)
Eriogonum
parvifolium
(Seacliff Wild Buckwheat)
Eriogonum
spp.
(wild buckwheats)
Eriogonum
strictum
(Strict Buckwheat)
Eriogonum
umbellatum
(Sulfur Buckwheat)
Eriogonum
wrightii
(Wright's buckwheat)
Eriophorum
angustifolium
(Common Cottongrass)
Eriophorum
chamissonis
(Chamisso's Cotton-grass)
Eriophorum
spp.
(Cottongrasses)
Eriophorum
vaginatum
(tussock cottongrass)
Eriophorum
virginicum
(tawny cottongrass)
Eriophyllum
confertiflorum
(Golden Yarrow)
Eriophyllum
lanatum
(Oregon Sunshine)
Eriophyllum
spp.
(Woolly sunflowers)
Eriophyllum
staechadifolium
(seaside woolly sunflower)
Eriophyllum
wallacei
(Wallace's woollydaisy)
Eriospermum
spp.
(Woolseeds)
Eriostemon
australasius
(pink wax flower)
Eriostemon
spp.
Erodium
botrys
(Mediterranean Stork's-bill)
Erodium
chrysanthum
(Yellow Stork's Bill)
Erodium
cicutarium
(Redstem Stork's-bill)
Erodium
moschatum
(musk stork's-bill)
Erodium
spp.
(stork's-bills)
Erodium
texanum
(Texas stork's bill)
Eruca
sativa
(Arugula)
Eruca
spp.
(Arugula)
Eryngium
agavifolium
(Agave-leaved Sea Holly)
Eryngium
alpinum
(Alpine Sea Holly)
Eryngium
amethystinum
(Amethyst Sea Holly)
Eryngium
giganteum
(Miss Wilmott's ghost)
Eryngium
Hybrids
(sea holly)
Eryngium
leavenworthii
(Leavenworth's eryngo)
Eryngium
maritimum
(Sea Holly)
Eryngium
ovinum
(blue devil)
Eryngium
planum
(Blue Eryngo)
Eryngium
spp.
(Eryngos)
Eryngium
yuccifolium
(Rattlesnake Master)
Erysimum
(wallflower)
Erysimum
capitatum
(Western Wallflower)
Erysimum
×
cheiri
(Wallflower)
Erythranthe
cardinalis
(Scarlet Monkeyflower)
Erythranthe
guttata
(yellow monkey-flower)
Erythranthe
lewisii
(Great Purple Monkeyflower)
Erythranthe
spp.
(monkeyflowers)
Erythrina
crista-galli
(Cockspur coral tree)
Erythrina
herbacea
(Eastern Coral Bean)
Erythrina
spp.
(Coral trees)
Erythronium
albidum
(white fawnlily)
Erythronium
americanum
(Yellow Trout Lily)
Erythronium
grandiflorum
(Glacier Lily)
Erythronium
hendersonii
(Fawn Lily)
Erythronium
oregonum
(Oregon fawn lily)
Erythronium
'Pagoda'
(Pagoda fawn lily)
Erythronium
revolutum
(coast fawn lily)
Erythronium
spp.
(fawn lilies)
Erythronium
umbilicatum
(dimpled trout lily)
Escallonia
(Escallonia)
Escallonia
'Newport Dwarf'
(Newport Dwarf Escallonia)
Escallonia
×
rigida
(Escallonia Hybrid)
Escallonia
rubra
(redclaws)
Escallonia
spp.
(escallonia)
Eschscholzia
californica
(California poppy)
Eschscholzia
minutiflora
(Little Gold Poppy)
Eschscholzia
spp.
(California poppies)
Escobaria
spp.
Escobaria
vivipara
(Spinystar)
Eubotrys
racemosus
(fetterbush)
Eubotrys
spp.
Eucalyptus
(eucalyptus)
Eucalyptus
arenacea
(desert stringybark)
Eucalyptus
camaldulensis
(River Red Gum)
Eucalyptus
coccifera
(Tasmanian Snow Gum)
Eucalyptus
crebra
(Narrow-leaved Red Ironbark)
Eucalyptus
cypellocarpa
(mountain grey gum)
Eucalyptus
deglupta
(Rainbow Eucalyptus Tree)
Eucalyptus
diversifolia
(Coastal Mallee)
Eucalyptus
fasciculosa
(Pink Gum)
Eucalyptus
globulus
(Tasmanian Blue Gum)
Eucalyptus
grandis
(Flooded Gum)
Eucalyptus
gunnii
(Silver Drop Eucalyptus)
Eucalyptus
incrassata
(Ridge-fruited mallee)
Eucalyptus
leucoxylon
(Yellow gum)
Eucalyptus
melliodora
(Yellow Box)
Eucalyptus
microcorys
(Tallowwood)
Eucalyptus
neglecta
(Omeo Gum)
Eucalyptus
obliqua
(Messmate Stringybark)
Eucalyptus
ovata
(Swamp Gum)
Eucalyptus
pauciflora
ssp.
debeuzevillei
(Jounama Snow Gum)
Eucalyptus
pauciflora
ssp.
niphophila
(Alpine Snow Gum)
Eucalyptus
pilularis
(Blackbutt)
Eucalyptus
polyanthemos
(Silver Dollar Gum)
Eucalyptus
racemosa
(Northern Scribbly Gum)
Eucalyptus
regnans
(Australian Mountain Ash)
Eucalyptus
robusta
(Swamp Mahogany)
Eucalyptus
sideroxylon
(Red Ironbark)
Eucalyptus
spp.
(eucalyptus)
Eucalyptus
tereticornis
(Forest red gum)
Eucalyptus
viminalis
(manna gum)
Eucomis
spp.
(Pineapple Lily)
Eucryphia
cordifolia
(eucryphia)
Eucryphia
glutinosa
(Brush Bush)
Eucryphia
spp.
Eucrypta
chrysanthemifolia
(common eucrypta)
Eucrypta
spp.
Eugenia
spp.
(stoppers)
Eulobus
californicus
(California primrose)
Eulobus
spp.
Eulophia
picta
(Shepherd's Crook Orchid)
Eulophia
spp.
Euonymus
alatus
(Burning Bush)
Euonymus
alatus
'Compactus'
(dwarf winged euonymus)
Euonymus
americanus
(strawberry bush)
Euonymus
atropurpureus
(wahoo)
Euonymus
europaeus
(Spindle)
Euonymus
fortunei
(wintercreeper)
Euonymus
fortunei
'Emerald Gaiety'
(Emerald Gaiety Euonymus)
Euonymus
fortunei
'Kewensis'
(Wintercreeper)
Euonymus
japonicus
(Japanese Euonymus)
Euonymus
planipes
(Flat-stalked Spindle)
Euonymus
spp.
(spindles)
Eupatorium
altissimum
(tall boneset)
Eupatorium
cannabinum
(hemp agrimony)
Eupatorium
capillifolium
(dogfennel)
Eupatorium
coelestinum
(Blue Mistflower)
Eupatorium
maculatum
'Gateway'
(Gateway Joe Pye Weed)
Eupatorium
perfoliatum
(Boneset)
Eupatorium
serotinum
(late boneset)
Eupatorium
spp.
(bonesets)
Euphorbia
albomarginata
(Whitemargin Sandmat)
Euphorbia
amygdaloides
(wood spurge)
Euphorbia
amygdaloides
var.
robbiae
(Mrs Robb's Bonnet)
Euphorbia
bicolor
(snow-on-the-prairie)
Euphorbia
ceratocarpa
(Sicilian Spurge)
Euphorbia
characias
ssp.
'Tasmanian Tiger'
(Tasmanian Tiger Spurge)
Euphorbia
characias
wulfenii
(Mediterranean spurge)
Euphorbia
cornigera
(Horned Spurge)
Euphorbia
corollata
(flowering spurge)
Euphorbia
cyathophora
(wild poinsettia)
Euphorbia
cyparissias
(cypress spurge)
Euphorbia
dentata
(green poinsettia)
Euphorbia
dulcis
'Chameleon'
(Chameleon Spurge)
Euphorbia
griffithii
(orange spurge)
Euphorbia
helioscopia
(Sun spurge)
Euphorbia
hirta
(Asthma Plant)
Euphorbia
hypericifolia
(Diamond Frost Euphorbia)
Euphorbia
lactea
(Dragon Bones)
Euphorbia
lathyris
(caper spurge)
Euphorbia
maculata
(Spotted spurge)
Euphorbia
marginata
(snow-on-the-mountain)
Euphorbia
martini
(Martin's Spurge)
Euphorbia
mellifera
(Honey Spurge)
Euphorbia
milii
(Crown-of-Thorns)
Euphorbia
myrsinites
(Myrtle Spurge)
Euphorbia
nicaeensis
(Nice Spurge)
Euphorbia
nutans
(nodding spurge)
Euphorbia
oblongata
(eggleaf spurge)
Euphorbia
palustris
(Marsh Spurge)
Euphorbia
paralias
(Sea Spurge)
Euphorbia
peplus
(petty spurge)
Euphorbia
polycarpa
(smallseed sandmat)
Euphorbia
polychroma
(Cushion Spurge)
Euphorbia
portlandica
(Portland Spurge)
Euphorbia
prostrata
(prostrate sandmat)
Euphorbia
pulcherrima
(Poinsettia)
Euphorbia
schillingii
(Schilling's Spurge)
Euphorbia
seguieriana
(Seguier's Spurge)
Euphorbia
serpens
(creeping spurge)
Euphorbia
spp.
(Spurges)
Euphorbia
tirucalli
(Fire Stick)
Euphorbia
virgata
(leafy spurge)
Euphorbia
x
pasteurii
(Honey Spurge)
Euphrasia
collina
(purple eyebright)
Euphrasia
nemorosa
(Common Eyebright)
Euphrasia
spp.
(eyebrights)
Eupomatia
laurina
(Bolwarra)
Eupomatia
spp.
Eurhynchium
spp.
Eurhynchium
striatum
(Common Striated Feather-moss)
Euroschinus
falcatus
(Blush Cudgerie)
Euroschinus
spp.
Eurya
spp.
(eurya)
Eurybia
divaricata
(white wood aster)
Eurybia
macrophylla
(large-leaved aster)
Eurybia
spp.
(wood asters)
Euryomyrtus
ramosissima
(Rosy Heath-myrtle)
Euryomyrtus
spp.
Euryops
spp.
(True-eye Daisies)
Eustrephus
latifolius
(Wombat Berry)
Eustrephus
spp.
Eutaxia
microphylla
(common eutaxia)
Eutaxia
spp.
Euthamia
caroliniana
(slender goldentop)
Euthamia
graminifolia
(flat-topped goldenrod)
Euthamia
spp.
(grass-leaved goldenrods)
Eutrochium
dubium
(coastal plain Joe-Pye weed)
Eutrochium
fistulosum
(tall Joe-pye weed)
Eutrochium
maculatum
(Spotted Joe Pye Weed)
Eutrochium
purpureum
(sweet Joe-Pye-weed)
Eutrochium
spp.
(Joe-Pye weeds)
Evolvulus
alsinoides
(tropical speedwell)
Evolvulus
sericeus
(silky evolvulus)
Evolvulus
spp.
(dwarf morning glory)
Excoecaria
agallocha
(milky mangrove)
Excoecaria
spp.
Exocarpos
cupressiformis
(Cherry Ballart)
Exocarpos
latifolius
(Broad Leaved Native Cherry)
Exocarpos
spp.
Exocarpos
strictus
(Pale-fruit Ballart)
Eysenhardtia
spp.
Eysenhardtia
texana
(Texas Kidneywood)
Fabiana
imbricata
(Pichi)
Fabiana
spp.
Fagopyrum
esculentum
(Common Buckwheat)
Fagopyrum
spp.
Fagus
grandifolia
(American Beech)
Fagus
spp.
(beeches)
Fagus
sylvatica
(European beech)
Fagus
sylvatica
'Pendula'
(weeping beech)
Fagus
sylvatica
'Purpurea Tricolor'
(Tricolor Beech)
Fagus
sylvatica
'Rohanii'
(Rohan Purple Beech)
Fagus
sylvatica
var.
atropurpurea
(purple beech)
Fagus
sylvatica
var.
atropurpurea
'Pendula'
(weeping copper beech)
Fallopia
baldschuanica
(Bukhara Fleeceflower)
Fallopia
×
bohemica
(Bohemian giant knotweed)
Fallopia
convolvulus
(Black-bindweed)
Fallopia
japonica
(Japanese knotweed)
Fallopia
sachalinensis
(giant knotweed)
Fallopia
scandens
(climbing false buckwheat)
Fallopia
spp.
(Fallopias)
Fallugia
paradoxa
(Apache plume)
Fallugia
spp.
Farfugium
japonicum
(Leopard Plant)
Farfugium
japonicum
var.
giganteum
(Giant Leopard Plant)
Farfugium
spp.
Fargesia
angustissima
(Narrow-leaved Bamboo)
Fargesia
murielae
(Umbrella Bamboo)
Fargesia
nitida
(Fountain Bamboo)
Fargesia
robusta
(Robust Bamboo)
Fargesia
spp.
Fatoua
spp.
Fatoua
villosa
(hairy crabweed)
×
Fatshedera
lizei
(fatshedera)
Fatsia
japonica
(fatsia)
Fatsia
spp.
(Japanese Aralia)
Felicia
spp.
(Felicias)
Ferocactus
cylindraceus
(California Barrel Cactus)
Ferocactus
spp.
(barrel cactuses)
Ferocactus
wislizeni
(fishhook barrel cactus)
Ferula
communis
(giant fennel)
Ferula
spp.
Festuca
(Fescues)
Festuca
amethystina
(Large Blue Fescue)
Festuca
arundinacea
(Tall Fescue)
Festuca
brevipila
(Hard Fescue)
Festuca
glauca
(blue fescue)
Festuca
idahoensis
(Idaho fescue)
Festuca
roemeri
(Roemer's Fescue)
Festuca
rubra
(Red Fescue)
Ficaria
spp.
Ficaria
verna
(lesser celandine)
Ficinia
nodosa
(Knobby Clubrush)
Ficinia
spp.
(Star Grasses)
Ficus
altissima
(Council Tree)
Ficus
aurea
(Florida Strangler Fig)
Ficus
benghalensis
(Ficus Audrey)
Ficus
benjamina
(Ficus Benjamina)
Ficus
carica
(common fig)
Ficus
carica
'Brown Turkey'
(Brown Turkey Fig)
Ficus
coronata
(creek sandpaper fig)
Ficus
elastica
(Rubber Plant)
Ficus
elastica
'Burgundy'
(Burgundy Rubber Tree)
Ficus
lyrata
(fiddle leaf fig)
Ficus
maclellandii
(Ficus Alii)
Ficus
macrophylla
(Moreton Bay fig)
Ficus
microcarpa
(Ficus Ginseng)
Ficus
opposita
(Sandpaper Fig)
Ficus
rubiginosa
(Port Jackson fig)
Ficus
spp.
(Figs)
Ficus
triangularis
(Variegated Ficus Triangularis)
Ficus
virens
(White fig)
Filago
germanica
(Common Cudweed)
Filago
spp.
Filipendula
spp.
Filipendula
ulmaria
(Meadowsweet)
Filipendula
vulgaris
(Dropwort)
Fimbristylis
dichotoma
(Common Fringe-rush)
Fimbristylis
spp.
(Fringe Rush)
Fissidens
spp.
(pocket mosses)
Fissidens
taxifolius
(Common Pocket-moss)
Flagellaria
indica
(Indian Bushcane)
Flagellaria
spp.
Flindersia
australis
(Crows Ash)
Flindersia
spp.
Foeniculum
spp.
Foeniculum
vulgare
(Fennel)
Forestiera
pubescens
(Downy Forestiera)
Forestiera
spp.
Forsythia
×
intermedia
'Lynwood Gold'
(Lynwood Gold Forsythia)
Forsythia
spp.
(Forsythias)
Forsythia
suspensa
(Golden-bell)
Forsythia
x
intermedia
(hybrid forsythia)
Fossombronia
spp.
(Frillworts)
Fothergilla
gardenii
(dwarf fothergilla)
Fothergilla
spp.
(witch-alders)
Fouquieria
splendens
(ocotillo)
Fouquieria
spp.
Fragaria
chiloensis
(Beach Strawberry)
Fragaria
'Lipstick'
(lipstick strawberry)
Fragaria
spp.
(strawberries)
Fragaria
vesca
(Woodland Strawberry)
Fragaria
virginiana
(Mountain Strawberry)
Francoa
sonchifolia
(Chilean bridalwreath)
Francoa
spp.
Frangula
alnus
(alder buckthorn)
Frangula
californica
(coffeeberry)
Frangula
caroliniana
(Carolina buckthorn)
Frangula
purshiana
(cascara)
Frangula
spp.
(False-Buckthorns)
Frankenia
salina
(Alkali Heath)
Frankenia
spp.
Franklinia
alatamaha
(franklinia)
Franklinia
spp.
Frasera
speciosa
(monument plant)
Frasera
spp.
Fraxinus
albicans
(Texas ash)
Fraxinus
americana
(White Ash)
Fraxinus
angustifolia
(Narrow-leaved Ash)
Fraxinus
excelsior
f.
diversiflora
(One-leaved Ash)
Fraxinus
latifolia
(Oregon ash)
Fraxinus
nigra
(black ash)
Fraxinus
ornus
(flowering ash, manna ash)
Fraxinus
oxycarpa
'Raywood'
(Raywood ash, Flame ash)
Fraxinus
spp.
(ashes)
Fraxinus
velutina
(Velvet Ash)
Freesia
×
kewensis
Freesia
leichtlinii
(Dune Kammetjie)
Freesia
spp.
Fremontodendron
californicum
(California flannelbush)
Fremontodendron
spp.
Fritillaria
affinis
(Chocolate Lily)
Fritillaria
imperialis
(crown imperial)
Fritillaria
meleagris
(snakes-head fritillary)
Fritillaria
pudica
(yellow fritillary)
Fritillaria
spp.
(Fritillaries)
Frullania
dilatata
(Dilated Scalewort)
Frullania
eboracensis
(New York Scalewort)
Frullania
spp.
(Scaleworts)
Frullania
tamarisci
(Tamarisk Scalewort)
Fuchsia
×
hybrida
(hybrid fuchsia)
Fuchsia
magellanica
(hardy fuchsia)
Fuchsia
spp.
(fuchsias)
Fuchsia
x
hybrida
(Fuchsia)
Fumaria
capreolata
(white ramping-fumitory)
Fumaria
muralis
(common ramping-fumitory)
Fumaria
officinalis
(Common Fumitory)
Fumaria
spp.
(Fumitories)
Funaria
hygrometrica
(Bonfire moss)
Funaria
spp.
Funastrum
heterophyllum
(Hartweg's climbing milkweed)
Funastrum
spp.
Furcraea
spp.
(False agaves)
Gagea
spp.
Gahnia
aspera
(Red-berried Saw-sedge)
Gahnia
clarkei
(tall saw-sedge)
Gahnia
radula
(Thatch Saw-sedge)
Gahnia
sieberiana
(Red-fruit Saw-sedge)
Gahnia
spp.
(Saw-sedges)
Gaillardia
aristata
(blanketflower)
Gaillardia
×
grandiflora
(Hybrid Blanketflower)
Gaillardia
pulchella
(firewheel)
Gaillardia
spp.
(Blanketflowers)
Gaillardia
x
grandiflora
'Arizona Sun'
(Arizona Sun Gaillardia)
Galactia
spp.
(Milkpeas)
Galanthus
(snowdrop)
Galanthus
elwesii
(Giant Snowdrop)
Galanthus
ikariae
(Ikarian Snowdrop)
Galanthus
nivalis
(Common Snowdrop)
Galax
spp.
Galax
urceolata
(galax)
Galearis
spectabilis
(showy orchis)
Galearis
spp.
Galega
officinalis
(common milkpea)
Galega
spp.
Galeopsis
bifida
(Bifid Hemp-nettle)
Galeopsis
spp.
(Hempnettles)
Galeopsis
tetrahit
(Common hemp-nettle)
Galinsoga
quadriradiata
(shaggy soldier)
Galinsoga
spp.
(galinsogas)
Galium
album
(white bedstraw)
Galium
angustifolium
(Narrow-leaved Bedstraw)
Galium
aparine
(cleavers (native))
Galium
boreale
(Northern Bedstraw)
Galium
circaezans
(licorice bedstraw)
Galium
mollugo
(Hedge Bedstraw)
Galium
odoratum
(sweet woodruff)
Galium
palustre
(Common Marsh-bedstraw)
Galium
saxatile
(Heath Bedstraw)
Galium
spp.
(bedstraws)
Galium
trifidum
(small bedstraw (native))
Galium
triflorum
(fragrant bedstraw)
Galium
verum
(Lady's Bedstraw)
Gamochaeta
pensylvanica
(Pennsylvania Cudweed)
Gamochaeta
spp.
(Everlastings and Cudweeds)
Gardenia
jasminoides
(Gardenia)
Gardenia
spp.
(gardenias)
Garrya
elliptica
(coast silktassel)
Garrya
spp.
(silktassels)
Gastrodia
sesamoides
(Cinnamon Bells)
Gastrodia
spp.
Gaudium
laevigatum
(Coast Teatree)
Gaudium
myrsinoides
(Heath Teatree)
Gaudium
spp.
Gaudium
trinervium
(Paperbark Tea Tree)
Gaultheria
hispidula
(creeping snowberry)
Gaultheria
mucronata
(Chilean pernettya)
Gaultheria
procumbens
(wintergreen)
Gaultheria
shallon
(salal)
Gaultheria
spp.
(wintergreens)
Gaura
(Wand Flower)
Gaylussacia
baccata
(black huckleberry)
Gaylussacia
spp.
(huckleberries)
Gazania
×
splendens
(Garden Treasure Flower)
Gazania
spp.
(Treasure Flowers)
Geijera
parviflora
(Wilga)
Geijera
salicifolia
(Axe Gapper)
Geijera
spp.
Geitonoplesium
cymosum
(Climbing Lily)
Geitonoplesium
spp.
Gelidium
spp.
(Jellyweeds)
Gelsemium
sempervirens
(Carolina Jessamine)
Gelsemium
spp.
Genista
linifolia
(needle-leaved broom)
Genista
lydia
(Lydia broom)
Genista
monspessulana
(French broom)
Genista
pilosa
(silkyleaf woadwaxen)
Genista
spp.
(Brooms)
Genista
tinctoria
(Dyer's Greenweed)
Gentiana
andrewsii
(closed bottle gentian)
Gentiana
asclepiadea
(Willow Gentian)
Gentiana
×
pallidocyanea
(Hybrid Bottle Gentian)
Gentiana
sceptrum
(King's Scepter Gentian)
Gentiana
spp.
(Gentians)
Gentianella
amarella
(autumn gentian)
Gentianella
spp.
(dwarf gentians)
Geobalanus
oblongifolius
(Gopher apple)
Geobalanus
spp.
Geraea
canescens
(Desert Sunflower)
Geraea
spp.
Geranium
(Hardy Geranium; Cranesbill)
Geranium
caespitosum
(pinewoods geranium)
Geranium
cantabrigiense
(Cambridge Geranium)
Geranium
×
cantabrigiense
'Karmina'
(Karmina Cambridge Cranesbill)
Geranium
carolinianum
(Carolina crane's-bill)
Geranium
dissectum
(Cut-leaved crane's-bill)
Geranium
endressii
(French Crane's-bill)
Geranium
'Gerwat ROZANNE'
(Rozanne geranium)
Geranium
himalayense
'Baby Blue'
(Baby Blue Geranium)
Geranium
homeanum
(Australasian Crane's-bill)
Geranium
'Johnson'
s
Blue'
(Johnson's Blue Geranium)
Geranium
lucidum
(shiny geranium)
Geranium
macrorrhizum
(Bigroot Geranium)
Geranium
macrorrhizum
'Ingwersen'
s
Variety'
(Ingwersen's Variety)
Geranium
maculatum
(wild geranium)
Geranium
maderense
(Giant Herb-Robert)
Geranium
molle
(dovefoot geranium)
Geranium
nodosum
(Knotted Cranesbill)
Geranium
oreganum
(Western Geranium)
Geranium
'Patricia'
(Patricia Geranium)
Geranium
phaeum
'Samobor'
(Samobor Geranium)
Geranium
potentilloides
(cinquefoil geranium)
Geranium
pratense
(Meadow Crane's-bill)
Geranium
psilostemon
(magenta cranesbill)
Geranium
pusillum
(Small-flowered Crane's-bill)
Geranium
pyrenaicum
(Hedgerow Crane's-bill)
Geranium
richardsonii
(Richardson's geranium)
Geranium
robertianum
(herb-Robert, stinky Bob)
Geranium
rotundifolium
(Roundleaf geranium)
Geranium
×
'Rozanne'
(Rozanne Cranesbill)
Geranium
sanguineum
(Bloody Crane's-bill)
Geranium
sanguineum
'Album'
(White Bloody Cranesbill)
Geranium
solanderi
(Solander's geranium)
Geranium
sylvaticum
(wood crane's-bill)
Geranium
tuberosum
(Tuberous Geranium)
Geranium
viscosissimum
(sticky geranium)
Geranium
wallichianum
(Purple-vein geranium)
Geranium
wlassovianum
(Wlassov's Geranium)
Gerbera
spp.
(Gerbera Daisies)
Geum
canadense
(white avens)
Geum
macrophyllum
(large-leaved avens)
Geum
rivale
(Water Avens)
Geum
spp.
(avens)
Geum
ssp.
'Cocktail Collection'
(avens)
Geum
triflorum
(Prairie Smoke)
Geum
urbanum
(Wood Avens)
Geum
vernum
(Spring Avens)
Gilia
capitata
(bluehead gilia)
Gilia
spp.
(Gilias)
Gilia
tricolor
(bird's-eye gilia)
Gillenia
spp.
(Bowman's Root)
Gillenia
trifoliata
(Bowman's Root)
Ginkgo
biloba
(ginkgo, maidenhair tree)
Ginkgo
biloba
'Autumn Gold'
(Autumn Gold Ginkgo)
Ginkgo
biloba
'Jade Butterflies'
(Jade Butterflies Ginkgo Tree)
Ginkgo
biloba
'Mariken'
(Ginkgo Biloba Mariken Tree)
Ginkgo
biloba
'PNI 2720'
(ginkgo)
Ginkgo
biloba
'Princeton Sentry'
(Princeton Sentry Columnar Ginkgo)
Ginkgo
spp.
Gladiolus
communis
(Gladiolus)
Gladiolus
communis
ssp.
byzantinus
(Eastern Gladiolus)
Gladiolus
×
hortulanus
(Large-flowered Gladiolus)
Gladiolus
Hybrids
(hardy gladiolus)
Gladiolus
murielae
(fragrant gladiolus)
Gladiolus
spp.
(Gladioli)
Glandora
diffusa
(lithodora)
Glandora
spp.
Glandularia
aristigera
(South American mock vervain)
Glandularia
bipinnatifida
(Dakota mock vervain)
Glandularia
canadensis
(rose vervain)
Glandularia
×
hybrida
(garden verbena)
Glandularia
spp.
(mock vervains)
Glaucium
flavum
(Yellow Horned Poppy)
Glaucium
spp.
Glebionis
coronaria
(Garland Daisy)
Glebionis
segetum
(Corn Marigold)
Glebionis
spp.
(Crown Daisy)
Glechoma
hederacea
(ground-ivy)
Glechoma
spp.
(ground-ivies)
Gleditsia
spp.
(honey locusts)
Gleditsia
triacanthos
(honey locust)
Gleichenia
dicarpa
(Pouched Coral Fern)
Gleichenia
microphylla
(scrambling coral-fern)
Gleichenia
spp.
Glischrocaryon
behrii
(golden pennants)
Glischrocaryon
spp.
Glochidion
ferdinandi
(Cheese Tree)
Glochidion
spp.
Glossodia
major
(Waxlip Orchid)
Glossodia
minor
(Small Waxlip Orchid)
Glossodia
spp.
Glyceria
borealis
(northern mannagrass)
Glyceria
elata
(tall mannagrass)
Glyceria
fluitans
(water manna grass)
Glyceria
grandis
(American Manna Grass)
Glyceria
maxima
(reed meadowgrass)
Glyceria
spp.
(Sweet Grasses)
Glycine
clandestina
(Twining Glycine)
Glycine
spp.
(Soybeans)
Glycine
tabacina
(Glycine Pea)
Glycyrrhiza
lepidota
(Wild Licorice)
Glycyrrhiza
spp.
Gnaphalium
spp.
Gnaphalium
uliginosum
(marsh cudweed)
Goeppertia
insignis
(Rattlesnake Plant)
Goeppertia
kegeljanii
(Calathea Musaica)
Goeppertia
makoyana
(Peacock Plant)
Goeppertia
orbifolia
(Round-Leaved Calathea)
Goeppertia
ornata
(Pinstripe Calathea)
Goeppertia
spp.
(Calatheas)
Gomphocarpus
fruticosus
(Narrow-leaf Cotton Bush)
Gomphocarpus
physocarpus
(balloonplant)
Gomphocarpus
spp.
Gompholobium
grandiflorum
(Large Wedge Pea)
Gompholobium
huegelii
(Common Wedge-pea)
Gompholobium
latifolium
(Golden Glory Pea)
Gompholobium
spp.
Gomphrena
celosioides
(prostrate globe-amaranth)
Gomphrena
globosa
(Globe Amaranth)
Gomphrena
spp.
(globe amaranth)
Gonocarpus
micranthus
(creeping raspwort)
Gonocarpus
spp.
Gonocarpus
tetragynus
(Common Raspwort)
Gonocarpus
teucrioides
(Raspwort)
Gonolobus
spp.
Gonolobus
suberosus
(Anglepod)
Goodenia
bellidifolia
(Daisy-leaved Goodenia)
Goodenia
blackiana
(Black's goodenia)
Goodenia
geniculata
(Bent Goodenia)
Goodenia
hederacea
(Ivy Goodenia)
Goodenia
heterophylla
(Variable-leaved Goodenia)
Goodenia
lanata
(trailing Goodenia)
Goodenia
mystrophylla
(wild pansies)
Goodenia
ovata
(hop goodenia)
Goodenia
pinnatifida
(scrambled eggs)
Goodenia
rotundifolia
(Star Goodenia)
Goodenia
spp.
(goodenias)
Goodia
lotifolia
(Clover-leaved Poison)
Goodia
spp.
Goodyera
oblongifolia
(Rattlesnake Plantain)
Goodyera
pubescens
(downy rattlesnake plantain)
Goodyera
spp.
Gossia
bidwillii
(Python Tree)
Gossia
spp.
Gossypium
spp.
(Cottons)
Gratiola
peruviana
(Austral Brooklime)
Gratiola
spp.
Grevillea
alpina
(Mountain Grevillea)
Grevillea
aquifolium
(variable prickly grevillea)
Grevillea
banksii
(Scarlet Grevillea)
Grevillea
buxifolia
(Grey Spider Flower)
Grevillea
'Canberra Gem'
(Canberra Gem Grevillea)
Grevillea
crithmifolia
(Spreading Grevillea)
Grevillea
juniperina
(Juniper-leaved Grevillea)
Grevillea
lavandulacea
(Lavender Grevillea)
Grevillea
linearifolia
(White Spider Flower)
Grevillea
mucronulata
(Green Spider Flower)
Grevillea
robusta
(silk oak)
Grevillea
rosmarinifolia
(rosemary grevillea)
Grevillea
sericea
(Pink Spider Flower)
Grevillea
speciosa
(Red Spider Flower)
Grevillea
spp.
(Grevilleas)
Grevillea
victoriae
(Royal Grevillea)
Grewia
spp.
(Donkeyberries)
Grimmia
laevigata
(Grimmia Dry Rock Moss)
Grimmia
pulvinata
(Grey-cushioned Grimmia)
Grimmia
spp.
(Cushion Mosses)
Grindelia
camporum
(Great Valley gumweed)
Grindelia
ciliata
(Spanish Gold)
Grindelia
integrifolia
(Puget Sound Gumweed)
Grindelia
spp.
(gumplants)
Grindelia
squarrosa
(Curlycup Gumweed)
Grindelia
stricta
(Oregon Gumplant)
Guioa
semiglauca
(Guioa)
Guioa
spp.
Gunnera
manicata
(gunnera)
Gunnera
spp.
(Gunneras)
Gunnera
tinctoria
(Giant Rhubarb)
Gutierrezia
sarothrae
(Broom Snakeweed)
Gutierrezia
spp.
(matchweeds and snakeweeds)
Guzmania
lingulata
(Scarlet Star)
Guzmania
spp.
(Guzmania)
Gymnadenia
conopsea
(Fragrant Orchid)
Gymnadenia
spp.
Gymnocalycium
mihanovichii
(Moon Cactus)
Gymnocalycium
spp.
Gymnocarpium
disjunctum
(oak fern)
Gymnocarpium
dryopteris
(Northern Oak Fern)
Gymnocarpium
spp.
(oak ferns)
Gymnocladus
dioicus
(Kentucky coffee tree)
Gymnocladus
spp.
Gymnostachys
anceps
(settler's flax)
Gymnostachys
spp.
Gynatrix
pulchella
(Hemp Bush)
Gynatrix
spp.
Gynochthodes
jasminoides
(sweet morinda)
Gynochthodes
spp.
Gynura
aurantiaca
(Purple Passion Plant)
Gynura
spp.
Gypsophila
repens
'Rosea'
(Pink Creeping Baby's Breath)
Gypsophila
'Rosenschleier'
(Rosy Veil Baby's Breath)
Gypsophila
spp.
Hackelia
latifolia
(Forest Hound’s-tongue)
Hackelia
spp.
(Stickseeds)
Hackelia
suaveolens
(sweet hound's-tongue)
Hackelia
virginiana
(virginia stickseed)
Hacquetia
epipactis
(hacqetia)
Hacquetia
spp.
Hakea
dactyloides
(finger hakea)
Hakea
decurrens
(Bushy Needlewood)
Hakea
laurina
(Pincushion hakea)
Hakea
lissocarpha
(Honey Bush)
Hakea
lissosperma
(Mountain Needlewood)
Hakea
mitchellii
(desert Hakea)
Hakea
prostrata
(Harsh Hakea)
Hakea
rostrata
(Beaked Hakea)
Hakea
salicifolia
(Willow-leaved hakea)
Hakea
sericea
(Bushy needlebush)
Hakea
spp.
(Pincushion trees)
Hakea
teretifolia
(Dagger Hakea)
Hakea
ulicina
(Furze Hakea)
Hakonechloa
macra
(Hakone grass)
Hakonechloa
macra
'All Gold'
(All Gold Hakone Grass)
Hakonechloa
macra
'Aureola'
(Japanese Forest Grass)
Hakonechloa
spp.
Halesia
carolina
(Carolina silverbell)
Halesia
monticola
(Mountain Silverbell)
Halesia
spp.
(silverbells)
Haloragis
spp.
(Raspweed)
Hamamelis
mollis
(Chinese witch hazel)
Hamamelis
spp.
(witch-hazels)
Hamamelis
virginiana
(Common Witch Hazel)
Hamamelis
x
intermedia
(hybrid witch hazel)
Hamelia
patens
(Firebush)
Hamelia
spp.
(Firebushes)
Handroanthus
chrysotrichus
(Golden Trumpet Tree)
Handroanthus
impetiginosus
(Pink Trumpet Tree)
Handroanthus
spp.
Hardenbergia
comptoniana
(Native wisteria)
Hardenbergia
spp.
Hardenbergia
violacea
(False Sarsaparilla)
Harpullia
pendula
(Black Tulip)
Harpullia
spp.
Haworthia
fasciata
(Zebra Plant)
Haworthia
spp.
Haworthiopsis
spp.
(Sixsided Haworthias)
Hazardia
spp.
Hazardia
squarrosa
(saw-toothed goldenbush)
Hedera
helix
(English Ivy)
Hedera
helix
'Arborescens'
(Shrubby Ivy)
Hedera
hibernica
(Atlantic or Irish ivy)
Hedera
spp.
(ivies)
Hedwigia
ciliata
(Ciliate Hoarmoss)
Hedwigia
spp.
(Hoarmosses)
Hedycarya
angustifolia
(Australian mulberry)
Hedycarya
spp.
Hedychium
gardnerianum
(Kahili ginger)
Hedychium
spp.
(Garland lillies)
Hedypnois
rhagadioloides
(Cretanweed)
Hedypnois
spp.
Helenium
(sneezeweeds)
Helenium
amarum
(Bitterweed)
Helenium
autumnale
(Sneezeweed)
Helenium
flexuosum
(Southern Sneezeweed)
Helenium
'Moerheim Beauty'
(Moerheim Beauty Sneezeweed)
Helenium
spp.
(sneezeweed)
Helianthemum
(rock rose, sun rose)
Helianthemum
nummularium
'Cerise Queen'
(Cerise Queen Sun Rose)
Helianthemum
nummularium
'Fire Dragon'
(Fire Dragon Sun Rose)
Helianthus
(sunflower)
Helianthus
angustifolius
(Swamp Sunflower)
Helianthus
annuus
(Common Sunflower)
Helianthus
debilis
(cucumberleaf sunflower)
Helianthus
divaricatus
(woodland sunflower)
Helianthus
grosseserratus
(sawtooth sunflower)
Helianthus
hirsutus
(stiff-hair sunflower)
Helianthus
maximiliani
(Maximilian Perennial Sunflower)
Helianthus
mollis
(ashy sunflower)
Helianthus
petiolaris
(prairie sunflower)
Helianthus
strumosus
(pale-leaved woodland sunflower)
Helianthus
tuberosus
(Jerusalem artichoke)
Helichrysum
leucopsideum
(Satin Everlasting)
Helichrysum
spp.
(Everlasting-flowers)
Heliconia
rostrata
(Hanging Lobster Claw)
Heliconia
spp.
(Heliconias)
Helictotrichon
sempervirens
(blue oat grass)
Helictotrichon
spp.
Heliomeris
multiflora
(showy goldeneye)
Heliomeris
spp.
Heliopsis
helianthoides
var.
scabra
'Summer Sun'
(Summer Sun False Sunflower)
Heliopsis
spp.
(Oxeyes)
Heliotropium
amplexicaule
(fragrant heliotrope)
Heliotropium
curassavicum
(alkali heliotrope)
Heliotropium
indicum
(Indian Heliotrope)
Heliotropium
spp.
(Heliotropes)
Helleborus
argutifolius
(Corsican hellebore)
Helleborus
atrorubens
(dark red hellebore)
Helleborus
foetidus
(Stinking hellebore)
Helleborus
orientalis
(Lenten Rose)
Helleborus
spp.
(Hellebores)
Helleborus
sternii
(Stern's Hellebore)
Helleborus
x
hybridus
(hybrid hellebore)
Helminthotheca
echioides
(bristly oxtongue)
Helminthotheca
spp.
Helosciadium
nodiflorum
(Fool's Watercress)
Helosciadium
spp.
Hemerocallis
'Bela Lugosi'
(Bela Lugosi Daylily)
Hemerocallis
'Black Ambrosia'
(Black Ambrosia Daylily)
Hemerocallis
'Buttered Popcorn'
(Buttered Popcorn Daylily)
Hemerocallis
'Canadian Border Patrol'
(Canadian Border Patrol Daylily)
Hemerocallis
'Custard Candy'
(Custard Candy Daylily)
Hemerocallis
'Earlybird Cardinal'
(Earlybird Cardinal Daylily)
Hemerocallis
'Ed Brown'
(Ed Brown Daylily)
Hemerocallis
'Ed Murray'
(Ed Murray Daylily)
Hemerocallis
'El Desperado'
(El Desperado Daylily)
Hemerocallis
'Elegant Candy'
(Elegant Candy Daylily)
Hemerocallis
'Fooled Me'
(Fooled Me Daylily)
Hemerocallis
'French Lingerie'
(French Lingerie Daylily)
Hemerocallis
×
'Happy Returns'
(Happy Returns Daylily)
Hemerocallis
Hybrids
(daylily)
Hemerocallis
'Janice Brown'
(Janice Brown Daylily)
Hemerocallis
'Jolyene Nichole'
(Jolyene Nichole Daylily)
Hemerocallis
lilioasphodelus
(yellow daylily)
Hemerocallis
'Moonlit Masquerade'
(Moonlit Masquerade Daylily)
Hemerocallis
'Night Whispers'
(Night Whispers Daylily)
Hemerocallis
'Prairie Blue Eyes'
(Prairie Blue Eyes Daylily)
Hemerocallis
'Primal Scream'
(Primal Scream Daylily)
Hemerocallis
'Purple de Oro'
(Purple de Oro Daylily)
Hemerocallis
'Siloam Double Classic'
(Siloam Double Classic)
Hemerocallis
'Singular Sensation'
(Singular Sensation Daylily)
Hemerocallis
spp.
(daylilies)
Hemerocallis
×
'Stella de Oro'
(Stella de Oro Daylily)
Hemerocallis
'Strawberry Candy'
(Strawberry Candy Daylily)
Hemerocallis
'Wineberry Candy'
(Wineberry Candy Jumbo Daylily)
Hemizonia
congesta
(Hayfield Tarweed)
Hemizonia
spp.
Hepatica
(hepatica, liverleaf)
Hepatica
acutiloba
(sharp-lobed hepatica)
Hepatica
americana
(round-lobed hepatica)
Hepatica
nobilis
(Liverleaf)
Heptacodium
miconioides
(Seven Son Flower)
Heptacodium
spp.
(Seven-son Flower)
Heptapleurum
actinophyllum
(Australian Umbrella Tree)
Heptapleurum
arboricola
(Miniature umbrella tree)
Heptapleurum
delavayi
(Delavay's Schefflera)
Heptapleurum
spp.
(umbrella trees)
Heracleum
mantegazzianum
(giant hogweed)
Heracleum
maximum
(cow-parsnip)
Heracleum
sphondylium
(hogweed)
Heracleum
spp.
(hogweeds)
Herbertia
lahue
(Prairie Nymph)
Herbertia
spp.
Hermannia
spp.
(Dollsroses)
Hesperaloe
parviflora
(Red Yucca)
Hesperaloe
spp.
(False Yuccas)
Hesperis
matronalis
(dame's rocket)
Hesperis
spp.
(Dame's rockets)
Hesperocallis
spp.
Hesperocallis
undulata
(desert lily)
Hesperocyparis
arizonica
(Arizona Cypress)
×Hesperocyparis
leylandii
(Leyland cypress)
Hesperocyparis
macrocarpa
'Goldcrest'
(Goldcrest Monterey Cypress)
Hesperocyparis
spp.
(western cypresses)
Hesperoyucca
spp.
Hesperoyucca
whipplei
(chaparral yucca)
Heteromeles
arbutifolia
(Toyon)
Heteromeles
spp.
Heterotheca
grandiflora
(Telegraphweed)
Heterotheca
spp.
(False Goldenasters)
Heterotheca
subaxillaris
(Camphorweed)
Heterotheca
villosa
(Hairy Gold Aster)
Heuchera
(alumroots)
Heuchera
'Amber Waves'
(Amber Waves Coral Bells)
Heuchera
americana
(American Alumroot)
Heuchera
chlorantha
(Tall Alumroot)
Heuchera
cylindrica
(Round-Leaf Alumroot)
Heuchera
'Marmalade'
(Marmalade Coral Bells)
Heuchera
micrantha
(native heuchera)
Heuchera
×
'Obsidian'
(Obsidian Heuchera)
Heuchera
spp.
(coral bells)
Heuchera
villosa
'Autumn Bride'
(Autumn Bride Heuchera)
Heuchera
villosa
'Caramel'
(Caramel Heuchera)
×
Heucherella
'Kimono'
(Kimono Foamy Bells)
Heucherella
spp.
Heucherella
×
'Sweet Tea'
(Sweet Tea Foamy Bells)
Hexasepalum
spp.
Hexasepalum
teres
(rough buttonweed)
Hibbertia
aspera
(Rough Guinea Flower)
Hibbertia
crinita
(Long-hair Guinea-flower)
Hibbertia
cuneiformis
(Cutleaf Hibbertia)
Hibbertia
dentata
(Toothed Guinea Flower)
Hibbertia
devitata
(Smooth Guinea-flower)
Hibbertia
exutiacies
(Prickly Guinea-flower)
Hibbertia
fasciculata
(bundled hibbertia)
Hibbertia
hypericoides
(Yellow Buttercups)
Hibbertia
linearis
(Showy Guinea Flower)
Hibbertia
obtusifolia
(grey guinea flower)
Hibbertia
riparia
(Erect Guinea-flower)
Hibbertia
scandens
(Climbing Guinea flower)
Hibbertia
sericea
(Silky Guinea-flower)
Hibbertia
spp.
(guinea-flowers)
Hibbertia
vestita
(Hairy Guinea-flower)
Hibbertia
virgata
(Twiggy Guinea-flower)
Hibiscus
×
archeri
(Red Hibiscus)
Hibiscus
coccineus
(Scarlet Rose Mallow)
Hibiscus
denudatus
(Rock Hibiscus)
Hibiscus
heterophyllus
(Rosella)
Hibiscus
laevis
(Halberd-leaf Rosemallow)
Hibiscus
moscheutos
(Hardy Hibiscus)
Hibiscus
rosa-sinensis
(Tropical Hibiscus)
Hibiscus
rosa-sinensis
'Painted Lady'
(Painted Lady Hibiscus Bush)
Hibiscus
spp.
(hibiscuses)
Hibiscus
syriacus
(Rose of Sharon)
Hibiscus
syriacus
'Aphrodite'
(Aphrodite Rose of Sharon)
Hibiscus
syriacus
'Ardens'
(Ardens Rose of Sharon)
Hibiscus
syriacus
'Diana'
(Diana Rose of Sharon)
Hibiscus
syriacus
'Oiseau Bleu'
(Bluebird Rose of Sharon)
Hibiscus
syriacus
'Woodbridge'
(Pink Rose of Sharon)
Hibiscus
tiliaceus
(sea hibiscus)
Hibiscus
trionum
(flower-of-an-hour)
Hieracium
albiflorum
(white hawkweed)
Hieracium
aurantiacum
(orange hawkweed)
Hieracium
caespitosum
(yellow hawkweed)
Hieracium
spp.
(hawkweeds)
Hieracium
umbellatum
(Canada hawkweed)
Hieracium
venosum
(rattlesnakeweed)
Hippeastrum
×
johnsonii
(St Joseph's Lily)
Hippeastrum
spp.
(Amaryllis)
Hippocrepis
comosa
(horseshoe vetch)
Hippocrepis
spp.
Hippophae
rhamnoides
(Sea-buckthorn)
Hippophae
spp.
Hippuris
spp.
Hippuris
vulgaris
(Common Mare's Tail)
Hirschfeldia
incana
(Shortpod Mustard)
Hirschfeldia
spp.
(Summer Mustard)
Histiopteris
incisa
(Water Fern)
Histiopteris
spp.
Holcus
lanatus
(common velvet-grass)
Holcus
mollis
(creeping velvet grass)
Holcus
spp.
(Velvet Grasses)
Holodiscus
discolor
(ocean spray)
Holodiscus
spp.
Homalanthus
populifolius
(Bleeding Heart)
Homalanthus
spp.
Homalocephala
spp.
Homalocephala
texensis
(Horse Crippler Cactus)
Homalothecium
sericeum
(Silky Wall Feather-moss)
Homalothecium
spp.
(homalothecium mosses)
Honckenya
peploides
(Sea Sandwort)
Honckenya
spp.
Hookeria
lucens
(Shining Hookeria)
Hookeria
spp.
Hordeum
brachyantherum
(Meadow Barley)
Hordeum
jubatum
(foxtail barley)
Hordeum
murinum
(wall barley)
Hordeum
pusillum
(little barley)
Hordeum
spp.
(Barleys)
Hordeum
vulgare
(Common Barley)
Hosta
(hostas)
Hosta
×
'Abiqua Drinking Gourd'
(Abiqua Drinking Gourd Hosta)
Hosta
'Blue Angel'
(Blue Angel Hosta)
Hosta
'Blue Mouse Ears'
(Blue Mouse Ears Hosta)
Hosta
'Bressingham Blue'
(Hosta Bressingham Blue)
Hosta
'Empress Wu'
(Empress Wu Hosta)
Hosta
'Francee'
(Francee Hosta)
Hosta
×
'Great Expectations'
(Great Expectations Hosta)
Hosta
'Guacamole'
(Guacamole Hosta)
Hosta
×
'Halcyon'
(Halcyon Hosta)
Hosta
Hybrids
(hosta)
Hosta
'June'
(June Hosta)
Hosta
×
'Liberty'
(Liberty Hosta)
Hosta
'Patriot'
(Patriot Hosta)
Hosta
'Purple Heart'
(Plantain Lily)
Hosta
sieboldiana
(Siebold's Hosta)
Hosta
×
'Spartacus'
(Spartacus Hosta)
Hosta
spp.
(Hosta Verdant Medley Collection)
Hosta
'Stained Glass'
(Stained Glass Hosta)
Hosta
'Sum and Substance'
(Sum and Substance Hosta)
Hottonia
palustris
(Water Violet)
Hottonia
spp.
Houstonia
caerulea
(azure bluet)
Houstonia
longifolia
(long-leaved bluets)
Houstonia
purpurea
(summer bluet)
Houstonia
pusilla
(tiny bluet)
Houstonia
spp.
(flowering bluets)
Houttuynia
cordata
(Chameleon Plant)
Houttuynia
spp.
Hovea
acutifolia
(Purple Bush Pea)
Hovea
heterophylla
(common hovea)
Hovea
spp.
Hoya
australis
(common waxflower)
Hoya
carnosa
'Compacta'
(Hindu Rope Plant)
Hoya
heuschkeliana
(variegated)
(Hoya Heuschkeliana Variegated)
Hoya
kerrii
(Sweetheart Hoya)
Hoya
meredithii
(Hoya Meredithii)
Hoya
multiflora
(variegated)
(Variegated Hoya Multiflora)
Hoya
pubicalyx
(Wax Plant)
Hoya
spp.
(Wax plants)
Humulus
lupulus
'Aureus'
(Golden Hop)
Humulus
scandens
(Japanese Hops)
Humulus
spp.
(Hops)
Huperzia
lucidula
(shining firmoss)
Huperzia
selago
(northern firmoss)
Huperzia
spp.
(temperate firmosses)
Hyacinthoides
hispanica
(Spanish bluebells)
Hyacinthoides
×
massartiana
(Hybrid bluebell)
Hyacinthoides
non-scripta
(bluebell)
Hyacinthoides
spp.
(Bluebells)
Hyacinthus
orientalis
(hyacinth)
Hyacinthus
spp.
(Hyacinths)
Hydrangea
anomala
ssp.
petiolaris
(Climbing Hydrangea)
Hydrangea
anomala
subsp.
petiolaris
(Climbing Hydrangea)
Hydrangea
arborescens
'Abetwo'
(Incrediball Hydrangea)
Hydrangea
arborescens
'Annabelle'
(Annabelle Hydrangea)
Hydrangea
aspera
(Rough-leaved Hydrangea)
Hydrangea
integrifolia
(evergreen climbing hydrangea)
Hydrangea
macrophylla
(bigleaf hydrangea)
Hydrangea
macrophylla
'Ayesha'
(Ayesha Hydrangea)
Hydrangea
macrophylla
'Bailmer'
(Endless Summer Hydrangea)
Hydrangea
macrophylla
'Blaumeise'
(Blue Tit Hydrangea)
Hydrangea
macrophylla
'Blushing Bride'
(Blushing Bride Hydrangea)
Hydrangea
macrophylla
'Endless Summer'
(Endless Summer Hydrangea)
Hydrangea
macrophylla
'Izu-no-hana'
(Izu-no-hana Hydrangea)
Hydrangea
macrophylla
'Mariesii'
(Mariesii Hydrangea)
Hydrangea
macrophylla
'Mariesii Lilacina'
(Lilacina Lacecap Hydrangea)
Hydrangea
macrophylla
'Merritt'
s
Supreme'
(Merritt's Supreme Hydrangea)
Hydrangea
macrophylla
'Nikko Blue'
(Nikko Blue Hydrangea)
Hydrangea
macrophylla
'Pia'
(Pia Hydrangea)
Hydrangea
paniculata
'Grandiflora'
(pee-gee hydrangea)
Hydrangea
paniculata
'Jane'
(Little Lime Hydrangea)
Hydrangea
paniculata
'Limelight'
(Limelight Peegee Hydrangea)
Hydrangea
paniculata
'Renhy'
(Vanilla Strawberry Hydrangea Tree)
Hydrangea
paniculata
'Tardiva'
(Tardiva Hydrangea)
Hydrangea
petiolaris
(climbing hydrangea)
Hydrangea
quercifolia
(oak-leaf hydrangea)
Hydrangea
quercifolia
'Alice'
(Alice Oakleaf Hydrangea)
Hydrangea
quercifolia
'Pee Wee'
(Pee Wee Oakleaf Hydrangea)
Hydrangea
quercifolia
'Snow Queen'
(Snow Queen Oakleaf Hydrangea)
Hydrangea
serrata
'Blue Billow'
(Blue Billow Hydrangea)
Hydrangea
serrata
'Grayswood'
(Grayswood Hydrangea)
Hydrangea
serrata
'Preziosa'
(Preziosa Hydrangea)
Hydrangea
spp.
(hydrangeas)
Hydrastis
canadensis
(Goldenseal)
Hydrastis
spp.
Hydrilla
spp.
Hydrilla
verticillata
(hydrilla)
Hydrocharis
morsus-ranae
(European Frog-bit)
Hydrocharis
spp.
Hydrocotyle
bonariensis
(largeleaf pennywort)
Hydrocotyle
hirta
(Hairy Pennywort)
Hydrocotyle
laxiflora
(Stinking Pennywort)
Hydrocotyle
novae-zeelandiae
(New Zealand Pennywort)
Hydrocotyle
ranunculoides
(floating marsh pennywort)
Hydrocotyle
spp.
(water pennyworts)
Hydrocotyle
umbellata
(manyflower marshpennywort)
Hydrocotyle
vulgaris
(Marsh Pennywort)
Hydrophyllum
appendiculatum
(great waterleaf)
Hydrophyllum
canadense
(Broad-leaf Waterleaf)
Hydrophyllum
capitatum
(ballhead waterleaf)
Hydrophyllum
macrophyllum
(Large-leaf water leaf)
Hydrophyllum
spp.
(Waterleaves)
Hydrophyllum
tenuipes
(Pacific waterleaf)
Hydrophyllum
virginianum
(Virginia waterleaf)
Hylocereus
spp.
Hylocereus
undatus
(Dragon Fruit)
Hylocomiadelphus
spp.
Hylocomiadelphus
triquetrus
(rough goose neck moss)
Hylocomium
splendens
(stairstep moss)
Hylocomium
spp.
Hylodesmum
glutinosum
(pointed-leaved tick-trefoil)
Hylodesmum
nudiflorum
(naked-flowered tick-trefoil)
Hylodesmum
spp.
Hylotelephium
'Herbstfreude'
(Autumn Joy Sedum)
Hylotelephium
×
mottramianum
(Autumn Joy)
Hylotelephium
spp.
(Live-forever)
Hylotelephium
telephium
(Orpine)
Hymenocallis
spp.
(spider lilies)
Hymenopappus
scabiosaeus
(Carolina Woollywhite)
Hymenopappus
spp.
(Woollywhites)
Hymenophyllum
cupressiforme
(Common Filmy-fern)
Hymenophyllum
spp.
(filmy ferns)
Hymenosporum
flavum
(Australian frangipani)
Hymenosporum
spp.
Hyophorbe
lagenicaulis
(Bottle Palm)
Hyophorbe
spp.
Hypericum
androsaemum
(Tutsan)
Hypericum
calycinum
(St. John's wort)
Hypericum
elodes
(Marsh St John's-wort)
Hypericum
gentianoides
(pineweed)
Hypericum
gramineum
(Small St John's Wort)
Hypericum
hirsutum
(Hairy St John's-wort)
Hypericum
humifusum
(Trailing St John's-wort)
Hypericum
Hybrids
(hybrid hypericum)
Hypericum
hypericoides
(St. Andrew's cross)
Hypericum
kalmianum
(Kalm St. John's Wort)
Hypericum
maculatum
(Imperforate St John's-wort)
Hypericum
mutilum
(Dwarf St. John's Wort)
Hypericum
perforatum
(common St. Johnswort)
Hypericum
prolificum
(shrubby St. John's-wort)
Hypericum
pulchrum
(Slender St John's-wort)
Hypericum
punctatum
(spotted St. John's wort)
Hypericum
spp.
(St. John's worts)
Hypericum
stragulum
(low St. John's wort)
Hypericum
tetrapetalum
(fourpetal St. Johnswort)
Hypericum
tetrapterum
(Square Stemmed Saint John's Wort)
Hypnum
andoi
(mamillate plait-moss)
Hypnum
cupressiforme
(Cypress-leaved Plait-moss)
Hypnum
jutlandicum
(Heath Plait-moss)
Hypnum
spp.
(Feather Moss)
Hypocalymma
angustifolium
(White Myrtle)
Hypocalymma
spp.
Hypochaeris
glabra
(Smooth Cat's Ear)
Hypochaeris
radicata
(hairy cat's-ear)
Hypochaeris
spp.
(Cat's-Ears)
Hypoestes
phyllostachya
(Polka Dot Plant)
Hypoestes
spp.
Hypolaena
fastigiata
(Tassel Rope-rush)
Hypolaena
spp.
Hypolepis
muelleri
(Harsh Ground-fern)
Hypolepis
spp.
Hypoxis
hirsuta
(yellow star grass)
Hypoxis
hygrometrica
(Golden Weather-grass)
Hypoxis
spp.
(Stargrasses)
Hyptis
alata
(Musky mint)
Hyptis
spp.
Hyssopus
officinalis
ssp.
aristatus
(Dwarf Hyssop)
Hyssopus
spp.
Hysterobaeckea
behrii
(Broom Baeckea)
Hysterobaeckea
spp.
Iberis
saxatilis
(rock candytuft)
Iberis
sempervirens
(candytuft)
Iberis
spathulata
(Pyrenean Candytuft)
Iberis
spp.
(Candytufts)
Ilex
aquifolium
(English holly)
Ilex
aquifolium
'Ferox Argentea'
(variegated porcupine holly)
Ilex
×
attenuata
(savannah holly)
Ilex
cassine
(dahoon holly)
Ilex
cornuta
(Chinese holly)
Ilex
crenata
(Japanese holly)
Ilex
decidua
(possumhaw)
Ilex
glabra
(gallberry)
Ilex
latifolia
(Lusterleaf Holly)
Ilex
meserveae
(Meserve Holly)
Ilex
mucronata
(Mountain holly)
Ilex
×
'Nellie R. Stevens'
(Nellie R. Stevens Holly)
Ilex
opaca
(American Holly)
Ilex
pernyi
(Perny Holly)
Ilex
spp.
(hollies)
Ilex
verticillata
(common winterberry)
Ilex
x
meserveae
(blue-leaved hybrid holly)
Iliamna
rivularis
(Streambank Globemallow)
Iliamna
spp.
Illicium
spp.
(Anise Tree)
Impatiens
(Impatiens)
Impatiens
capensis
(spotted jewelweed)
Impatiens
glandulifera
(policeman's helmet)
Impatiens
hawkeri
(New Guinea Impatiens)
Impatiens
omeiana
(Golden Impatiens)
Impatiens
pallida
(pale jewelweed)
Impatiens
parviflora
(small balsam)
Impatiens
walleriana
(bedding impatiens)
Imperata
spp.
(Cogongrass)
Indigofera
australis
(Australian Indigo)
Indigofera
miniata
(Scarlet Pea)
Indigofera
spp.
(Indigos)
Inga
edulis
(Ice Cream Bean)
Inga
spp.
Inula
spp.
(Elecampane)
Inula
viscosa
(sticky fleabane)
Ipheion
spp.
Ipheion
uniflorum
'Wisley Blue'
(Wisley Blue Spring Starflower)
Ipomoea
(Sweet Potato Vine)
Ipomoea
batatas
'Beauregard'
(Beauregard Sweet Potato)
Ipomoea
cairica
(Mile-a-minute vine)
Ipomoea
cordatotriloba
(Tievine)
Ipomoea
hederacea
(ivy-leaved morning-glory)
Ipomoea
imperati
(beach morning-glory)
Ipomoea
indica
(oceanblue morning glory)
Ipomoea
lacunosa
(White Morning-glory)
Ipomoea
×
multifida
(Cardinal Climber)
Ipomoea
pandurata
(wild potato vine)
Ipomoea
pes-caprae
(Beach Morning Glory)
Ipomoea
purpurea
(common morning-glory)
Ipomoea
sagittata
(Saltmarsh Morning-glory)
Ipomopsis
aggregata
(Scarlet Gilia)
Ipomopsis
rubra
(standing cypress)
Ipomopsis
spp.
(Skyrockets)
Iresine
spp.
(bloodleaves)
Iris
domestica
(Blackberry Lily)
Iris
douglasiana
(Douglas Iris)
Iris
ensata
(Japanese iris)
Iris
ensata
'Cascade Spice'
(Cascade Spice Japanese Iris)
Iris
florentina
(Florentine iris)
Iris
foetidissima
(Stinking Iris)
Iris
×
germanica
(Bearded iris)
Iris
germanica
(Bearded Iris)
Iris
germanica
'Autumn Circus'
(Autumn Circus Reblooming Bearded Iris)
Iris
germanica
'Beverly Sills'
(Beverly Sills Reblooming Iris)
Iris
germanica
'Blatant'
(Blatant Reblooming Iris)
Iris
germanica
'Brilliant Idea'
(Brilliant Idea Bearded Iris)
Iris
germanica
'Champagne Elegance'
(Champagne Elegance Reblooming Iris)
Iris
germanica
'City Lights'
(City Lights Reblooming Iris)
Iris
germanica
'Harvest of Memories'
(Harvest of Memories Reblooming Iris)
Iris
germanica
'Immortality'
(Immortality Reblooming Bearded Iris)
Iris
germanica
'Oreo'
(Oreo Bearded Iris)
Iris
germanica
'Rosalie Figge'
(Rosalie Figge Reblooming Iris)
Iris
germanica
'Social Graces'
(Social Graces Bearded Iris)
Iris
germanica
'Superstition'
(Superstition Bearded Iris)
Iris
germanica
'Tiger Honey'
(Tiger Honey Bearded Iris)
Iris
germanica
'Victoria Falls'
(Victoria Falls Reblooming Iris)
Iris
×
hollandica
(Dutch iris)
Iris
×
hybrida
(bearded iris)
Iris
'Kent Pride'
(Bearded Iris 'Kent Pride')
Iris
laevigata
(Rabbitear Iris)
Iris
louisiana
'Black Gamecock'
(Black Gamecock Louisiana Iris)
Iris
macrosiphon
(Bowltube Iris)
Iris
missouriensis
(Western Blue Flag Iris)
Iris
pallida
'Variegata'
(Variegated Sweet Iris)
Iris
paradoxa
(paradoxical iris)
Iris
pseudacorus
(Yellow Iris)
Iris
setosa
(Beachhead Iris)
Iris
sibirica
(Siberian iris)
Iris
spp.
(Irises)
Iris
'Superstition'
(Tall Bearded Iris)
Iris
tenax
(Oregon Flag Iris)
Iris
×
thompsonii
(Thompson's Pacific Coast Iris)
Iris
tuberosa
(Widow Iris)
Iris
versicolor
(northern blue flag)
Iris
virginica
(Virginia Iris)
Isatis
spp.
Isatis
tinctoria
(Woad)
Isocoma
menziesii
(Coastal Goldenbush)
Isocoma
spp.
Isolepis
cernua
(Fiber-optic Grass)
Isolepis
spp.
Isopogon
anemonifolius
(Broad-leaved Drumsticks)
Isopogon
anethifolius
(Narrow-leaf Drumsticks)
Isopogon
ceratophyllus
(Horny Cone-bush)
Isopogon
spp.
Isotoma
spp.
(Laurentia)
Itea
ilicifolia
(Holly-leaf Sweetspire)
Itea
spp.
Itea
virginica
(Virginia sweetspire)
Iva
annua
(Sumpweed)
Iva
frutescens
(marsh elder)
Iva
spp.
Ixia
spp.
(Corn lilies)
Ixodia
achillaeoides
(sand ixodia)
Ixodia
spp.
Ixora
coccinea
(Jungle flame)
Ixora
spp.
(ixoras)
Jacaranda
mimosifolia
(Jacaranda)
Jacaranda
spp.
(jacarandas)
Jacksonia
scoparia
(winged broom-pea)
Jacksonia
spp.
Jacobaea
aquatica
(Marsh Ragwort)
Jacobaea
erucifolia
(Hoary Ragwort)
Jacobaea
maritima
(dusty miller)
Jacobaea
spp.
(ragworts)
Jacobaea
vulgaris
(tansy ragwort)
Jagera
pseudorhus
(Fern Top)
Jagera
spp.
Jasione
montana
(Sheep's Bit Scabious)
Jasione
spp.
Jasminum
humile
(Italian Jasmine)
Jasminum
nudiflorum
(winter jasmine)
Jasminum
officinale
(Common Jasmine)
Jasminum
polyanthum
(Pink Jasmine)
Jasminum
spp.
(jasmine)
Jasminum
stephanense
(Pink Jasmine)
Jatropha
spp.
(Physic Nuts)
Jeffersonia
diphylla
(twinleaf)
Jeffersonia
spp.
Johnstonella
angustifolia
(narrow-leaved cryptantha)
Johnstonella
spp.
Jovibarba
spp.
(Beard Houseleek)
Juglans
californica
(California Black Walnut)
Juglans
cinerea
(Butternut)
Juglans
hindsii
(northern California black walnut)
Juglans
nigra
(black walnut)
Juglans
regia
(English walnut)
Juglans
spp.
(Walnuts)
Juncus
acuminatus
(Knotty-leaf Rush)
Juncus
acutiflorus
(Sharp-flowered Rush)
Juncus
articulatus
(jointed rush)
Juncus
balticus
(Baltic Rush)
Juncus
bufonius
(Toad rush)
Juncus
conglomeratus
(Compact Rush)
Juncus
effusus
(soft rush)
Juncus
ensifolius
(dagger-leaf rush)
Juncus
kraussii
(Sea Rush)
Juncus
pallidus
(Great Soft-rush)
Juncus
patens
(Spreading Rush)
Juncus
spp.
(Rushes)
Juncus
squarrosus
(heath rush)
Juncus
tenuis
(Path Rush)
Juncus
usitatus
(australian rush)
Juniperus
ashei
(Ashe juniper)
Juniperus
californica
(California Juniper)
Juniperus
chinensis
'Blue Point'
(Blue Point Juniper)
Juniperus
chinensis
'Kaizuka'
(Hollywood Juniper)
Juniperus
communis
(common juniper)
Juniperus
communis
'Gold Cone'
(Gold Cone Juniper)
Juniperus
conferta
(shore juniper)
Juniperus
conferta
'Blue Pacific'
(Blue Pacific Shore Juniper)
Juniperus
conferta
'Silver Mist'
(Silver Mist Shore Juniper)
Juniperus
deppeana
(alligator juniper)
Juniperus
grandis
(Sierra juniper)
Juniperus
horizontalis
(creeping juniper)
Juniperus
horizontalis
'Lime Glow'
(Lime Glow Juniper)
Juniperus
horizontalis
'Wiltonii'
(Blue Rug Juniper)
Juniperus
monosperma
(One-seed Juniper)
Juniperus
occidentalis
(Western Juniper)
Juniperus
osteosperma
(Utah Juniper)
Juniperus
procumbens
'Nana'
(Dwarf Japanese Garden Juniper)
Juniperus
sabina
'Tamariscifolia'
(Tam Juniper)
Juniperus
scopulorum
(Rocky Mountain Juniper)
Juniperus
spp.
(junipers)
Juniperus
squamata
'Blue Carpet'
(Blue Carpet Singleseed Juniper)
Juniperus
squamata
'Blue Star'
(Blue Star Juniper)
Juniperus
virginiana
'Brodie'
(Brodie Eastern Red Cedar)
Justicia
americana
(American water-willow)
Justicia
californica
(chuparosa)
Justicia
fulvicoma
(Orange Shrimp Plant)
Justicia
pilosella
(Gregg's tube tongue)
Justicia
spp.
Kaempferia
spp.
(Peacock Ginger)
Kalanchoe
blossfeldiana
(Flaming Katy)
Kalanchoe
delagoensis
(Mother of Millions)
Kalanchoe
×
houghtonii
(Alligator plant)
Kalanchoe
spp.
(Kalanchoes)
Kalimeris
spp.
(Japanese Aster)
Kalmia
angustifolia
(sheep laurel)
Kalmia
latifolia
(mountain laurel)
Kalmia
latifolia
'Elf'
(Elf Mountain Laurel)
Kalmia
latifolia
'Sarah'
(Sarah Mountain Laurel)
Kalmia
microphylla
(Western Bog Laurel)
Kalmia
polifolia
(Bog Laurel)
Kalmia
spp.
Keckiella
cordifolia
(heartleaf keckiella)
Keckiella
spp.
Kennedia
prostrata
(Running Postman)
Kennedia
rubicunda
(Dusky coral pea)
Kennedia
spp.
Kerria
japonica
(Japanese kerria)
Kerria
japonica
'Picta'
(Variegated Japanese Kerria)
Kerria
japonica
'Pleniflora'
(double kerria)
Kerria
spp.
Kindbergia
oregana
(Oregon Beaked Moss)
Kindbergia
praelonga
(Common Feather-moss)
Kindbergia
spp.
Kingia
australis
(bullanock)
Kingia
spp.
Kirengeshoma
palmata
(yellow waxbells)
Kirengeshoma
spp.
(Yellow Waxbells)
Knautia
arvensis
(Field Scabious)
Knautia
macedonica
(Macedonian Scabious)
Knautia
spp.
(Scabious)
Kniphofia
Hybrids
(torch lily, red hot poker)
Kniphofia
spp.
(Pokers)
Kniphofia
uvaria
(Red Hot Poker)
Koeleria
macrantha
(Prairie Junegrass)
Koeleria
spp.
Koelreuteria
paniculata
(goldenrain tree)
Koelreuteria
spp.
(golden rain tree)
Koenigia
alpina
(Alpine Knotweed)
Koenigia
campanulata
(Lesser Knotweed)
Koenigia
spp.
Kosteletzkya
pentacarpos
(Saltmarsh mallow)
Kosteletzkya
spp.
Krameria
bicolor
(White Rhatany)
Krameria
erecta
(Littleleaf Rhatany)
Krameria
lanceolata
(Trailing Rhatany)
Krameria
spp.
Krascheninnikovia
lanata
(Winterfat)
Krascheninnikovia
spp.
Krigia
biflora
(Two-flower Dwarf-dandelion)
Krigia
spp.
(Dwarf dandelions)
Krigia
virginica
(Virginia dwarfdandelion)
Kroenleinia
grusonii
(golden barrel cactus)
Kroenleinia
spp.
Kummerowia
spp.
Kummerowia
striata
(Japanese Clover)
Kunzea
ambigua
(Butterfly Bush)
Kunzea
capitata
(Pink Kunzea)
Kunzea
leptospermoides
(Yarra burgan)
Kunzea
pomifera
(Muntries)
Kunzea
spp.
(Kunzea)
Laburnum
anagyroides
(golden chain tree)
Laburnum
spp.
(Laburnums)
Laburnum
x
watereri
(Goldenchain Tree)
Lachenalia
spp.
(Cape Cowslips)
Lactuca
biennis
(tall blue lettuce)
Lactuca
canadensis
(Canada wild lettuce)
Lactuca
floridana
(woodland lettuce)
Lactuca
sativa
'Bibb'
(Bibb Lettuce)
Lactuca
sativa
'Buttercrunch'
(Buttercrunch Lettuce)
Lactuca
sativa
'Great Lakes'
(Great Lakes Lettuce)
Lactuca
sativa
'Red Sails'
(Red Sails Lettuce)
Lactuca
sativa
'Romaine'
(Romaine Lettuce)
Lactuca
sativa
var.
capitata
(Head Lettuce)
Lactuca
sativa
var.
crispa
(Leaf Lettuce)
Lactuca
sativa
var.
longifolia
(Romaine Lettuce)
Lactuca
serriola
(prickly lettuce)
Lactuca
spp.
(wild lettuces)
Lactuca
virosa
(bitter lettuce)
Lagenophora
spp.
Lagenophora
stipitata
(Blue Bottle-daisy)
Lagenophora
sublyrata
(slender bottle-daisy)
Lagerstroemia
(crape-myrtles)
Lagerstroemia
indica
'Bellini Grape'
(Bellini Grape Crape Myrtle)
Lagerstroemia
indica
'Catawba'
(Catawba Crape Myrtle)
Lagerstroemia
indica
'Muskogee'
(Muskogee Crape Myrtle Tree)
Lagerstroemia
indica
'Natchez'
(Natchez Crape Myrtle)
Lagerstroemia
indica
'Pink Velour'
(Pink Velour Crape Myrtle)
Lagerstroemia
indica
'Pocomoke'
(Pocomoke Crape Myrtle)
Lagerstroemia
indica
'Red Rocket'
(Red Rocket Crape Myrtle Tree)
Lagerstroemia
indica
'Tonto'
(Tonto Crape Myrtle Tree)
Lagerstroemia
indica
'Tuscarora'
(Tuscarora Crape Myrtle)
Lagerstroemia
indica
'Zuni'
(Zuni Crape Myrtle)
Lagerstroemia
spp.
(crape myrtle)
Lagunaria
patersonia
(Norfolk Island hibiscus)
Lagunaria
spp.
Lagurus
ovatus
(Hare's Tail Grass)
Lagurus
spp.
Lambertia
formosa
(Mountain Devil)
Lambertia
spp.
Lamiastrum
galeobdolon
(yellow archangel)
Lamiastrum
spp.
Lamium
album
(White deadnettle)
Lamium
amplexicaule
(henbit deadnettle)
Lamium
galeobdolon
(yellow archangel)
Lamium
hybridum
(cutleaf deadnettle)
Lamium
maculatum
(deadnettle)
Lamium
maculatum
'Beacon Silver'
(Spotted Deadnettle)
Lamium
orvala
(Balm-leaved Archangel)
Lamium
purpureum
(red deadnettle)
Lamium
spp.
(deadnettles and archangels)
Lampranthus
spp.
(dewplants)
Lamprocapnos
spectabilis
(bleeding heart)
Lamprocapnos
spp.
Lantana
×
hybrida
(New Gold Lantana)
Lantana
montevidensis
(creeping lantana)
Lantana
spp.
(Lantanas)
Lantana
strigocamara
(Lantana)
Lantana
urticoides
(Texas lantana)
Lapageria
rosea
(Chilean Bellflower)
Lapageria
spp.
Laportea
canadensis
(wood nettle)
Laportea
spp.
(wood nettles)
Lapsana
communis
(nipplewort)
Lapsana
spp.
Larix
(larches)
Larix
decidua
(European Larch)
Larix
decidua
'Pendula'
(Weeping European Larch)
Larix
kaempferi
(Japanese Larch)
Larix
kaempferi
'Diana'
(Diana Larch)
Larix
kaempferi
'Pendula'
(Weeping Japanese Larch)
Larix
laricina
(tamarack)
Larix
occidentalis
(Western Larch)
Larix
spp.
(larch)
Larrea
spp.
Larrea
tridentata
(Creosote Bush)
Laserpitium
siler
(Sermountain)
Laserpitium
spp.
Lasiopetalum
ferrugineum
(Rusty Petals)
Lasiopetalum
spp.
Lasthenia
californica
(California goldfields)
Lasthenia
gracilis
(common goldfields)
Lasthenia
spp.
(goldfields)
Lathraea
clandestina
(Purple Toothwort)
Lathraea
spp.
Lathraea
squamaria
(Common Toothwort)
Lathyrus
hirsutus
(Hairy Vetchling)
Lathyrus
japonicus
(seaside pea)
Lathyrus
latifolius
(broad-leaved sweet pea)
Lathyrus
linifolius
(Bitter Vetch)
Lathyrus
nissolia
(Grass Vetchling)
Lathyrus
pratensis
(meadow pea)
Lathyrus
spp.
(sweet peas and vetchlings)
Lathyrus
tuberosus
(Tuberous Pea)
Lathyrus
vernus
(Spring Vetchling)
Lathyrus
vestitus
(Pacific pea)
Laurencia
spp.
(Laurencia)
Laurus
nobilis
(bay laurel)
Laurus
spp.
(Bay Laurel)
Lavandula
angustifolia
(English lavender)
Lavandula
angustifolia
'Hidcote'
(Hidcote Lavender)
Lavandula
angustifolia
'Munstead'
(Munstead Lavender)
Lavandula
×
intermedia
(Lavandin)
Lavandula
×
intermedia
'Provence'
(Provence Lavender)
Lavandula
spp.
(Lavenders)
Lavandula
stoechas
(Spanish lavender)
Lavatera
spp.
(Tree Mallow)
Lavatera
thuringiaca
(shrub mallow)
Laxmannia
gracilis
(Slender Wire Lily)
Laxmannia
spp.
Layia
glandulosa
(whitedaisy tidytips)
Layia
platyglossa
(tidy tips)
Layia
spp.
Ledebouria
spp.
(Ledebouria)
Leichhardtia
rostrata
(Common Milk Vine)
Leichhardtia
spp.
Lemna
minor
(Common Duckweed)
Lemna
spp.
(Duckweeds)
Leonotis
leonurus
(lion's tail)
Leonotis
spp.
(lion's ears)
Leontodon
hispidus
(Rough Hawkbit)
Leontodon
saxatilis
(Hairy Hawkbit)
Leontodon
spp.
(hawkbits)
Leonurus
cardiaca
(common motherwort)
Leonurus
spp.
Lepechinia
calycina
(California Pitcher Sage)
Lepechinia
spp.
Lepidium
campestre
(field peppergrass)
Lepidium
didymum
(Lesser swine-cress)
Lepidium
draba
(Heart-podded Hoary Cress)
Lepidium
latifolium
(perennial pepperweed)
Lepidium
nitidum
(Shining Pepperweed)
Lepidium
spp.
(Pepperweeds)
Lepidium
virginicum
(Virginia pepperweed)
Lepidospartum
spp.
Lepidospartum
squamatum
(California Broomsage)
Lepidosperma
carphoides
(black rapier-sedge)
Lepidosperma
elatius
(tall sword-sedge)
Lepidosperma
gladiatum
(Coast Sword-sedge)
Lepidosperma
laterale
(variable sword-sedge)
Lepidosperma
semiteres
(Wire rapier-sedge)
Lepidosperma
spp.
(sword-sedges)
Leporella
fimbriata
(Hare Orchid)
Leporella
spp.
Leptecophylla
parvifolia
(Mountain Pinkberry)
Leptecophylla
spp.
Leptinella
spp.
(Brass Buttons)
Leptoceras
menziesii
(Rabbit Orchid)
Leptoceras
spp.
Leptorhynchos
spp.
Leptorhynchos
squamatus
(Scaly-buttons)
Leptorhynchos
tenuifolius
(Wiry Buttons)
Leptosiphon
parviflorus
(variable linanthus)
Leptosiphon
spp.
(Leptosiphon)
Leptospermum
continentale
(prickly tea-tree)
Leptospermum
lanigerum
(Woolly Teatree)
Leptospermum
namadgiensis
(Namadgi Tea Tree)
Leptospermum
polygalifolium
(Tantoon)
Leptospermum
scoparium
(Mānuka)
Leptospermum
spp.
(Tea Trees)
Leptospermum
squarrosum
(Peach-flowered Tea Tree)
Leschenaultia
biloba
(Blue Leschenaultia)
Leschenaultia
spp.
Lespedeza
capitata
(round-headed bush clover)
Lespedeza
cuneata
(Chinese bushclover)
Lespedeza
hirta
(hairy lespedeza)
Lespedeza
spp.
(bush clovers and lespedezas)
Lespedeza
virginica
(slender bush clover)
Leucaena
leucocephala
(White leadtree)
Leucaena
spp.
(leadtrees)
Leucanthemum
(Daisy)
Leucanthemum
maximum
(max chrysanthemum)
Leucanthemum
×
superbum
'Becky'
(Becky Shasta Daisy)
Leucanthemum
vulgare
(Oxeye Daisy)
Leucanthemum
x
superbum
(Shasta daisy)
Leucanthemum
x
superbum
'Alaska'
(Alaska Shasta Daisy)
Leucobryum
albidum
(white moss)
Leucobryum
glaucum
(Pincushion Moss)
Leucobryum
spp.
(Leucobryum mosses)
Leucocrinum
montanum
(common starlily)
Leucocrinum
spp.
Leucojum
aestivum
(spring snowflakes)
Leucojum
spp.
Leucojum
vernum
(Spring Snowflake)
Leucophyllum
frutescens
'Green Cloud'
(Green Cloud Texas Sage)
Leucophyllum
spp.
(silverleaves)
Leucophyta
brownii
(Cushion Bush)
Leucophyta
spp.
Leucopogon
affinis
(Lance Beard-heath)
Leucopogon
microphyllus
(Small-leafed White Beard)
Leucopogon
parviflorus
(coastal beard-heath)
Leucopogon
spp.
Leucopogon
verticillatus
(Tassel Flower)
Leucopogon
virgatus
(common beard-heath)
Leucospermum
cuneiforme
(Wart-stemmed Pincushion)
Leucospermum
×
hybridum
(Pincushion Hybrids)
Leucospermum
spp.
Leucothoë
axillaris
(drooping leucothoe)
Leucothoë
fontanesiana
'Girard'
s
Rainbow'
(Rainbow leucothoe)
Leucothoe
spp.
(Doghobble)
Leucothoë
spp.
Lewinskya
affinis
(Wood Bristle-moss)
Lewinskya
spp.
Lewisia
columbiana
(Columbia Lewisia)
Lewisia
cotyledon
(lewisia)
Lewisia
rediviva
(Bitterroot)
Lewisia
spp.
Lewisiopsis
spp.
(Tweedy's Lewisia)
Lewisiopsis
tweedyi
(large flowered lewisia)
Leycesteria
formosa
(Himalayan honeysuckle)
Leycesteria
spp.
(Himalayan Honeysuckle)
Leymus
condensatus
(giant wild rye)
Leymus
mollis
(Dune Grass)
Leymus
spp.
Liatris
aspera
(rough blazing star)
Liatris
ligulistylis
(Meadow Blazing Star)
Liatris
punctata
(dotted gayfeather)
Liatris
pycnostachya
(prairie blazing star)
Liatris
spicata
(prairie star)
Liatris
spicata
'Kobold'
(Kobold Liatris)
Liatris
spp.
(blazing-stars)
Libertia
chilensis
(Chilean Iris)
Libertia
grandiflora
(New Zealand Iris)
Libertia
spp.
Licuala
grandis
(Ruffled Fan Palm)
Licuala
spp.
Ligularia
dentata
(ligularia)
Ligularia
spp.
Ligusticum
lucidum
(Shining Lovage)
Ligusticum
scoticum
(Scots Lovage)
Ligusticum
spp.
Ligustrum
japonicum
(Waxleaf Privet)
Ligustrum
japonicum
'Texanum'
(waxleaf privot)
Ligustrum
lucidum
(tree privet)
Ligustrum
obtusifolium
(border privet)
Ligustrum
ovalifolium
(garden privet)
Ligustrum
ovalifolium
'Aureum'
(golden privet)
Ligustrum
quihoui
(Quihoui privet)
Ligustrum
sinense
'Variegatum'
(Variegated Privet)
Ligustrum
spp.
(privets)
Ligustrum
vulgare
(common privet)
Lilium
(Asiatic
Hybrids)
(Asiatic lilies)
Lilium
candidum
(Madonna lily)
Lilium
columbianum
(Columbia Lily)
Lilium
hansonii
(Hanson's Lily)
Lilium
lancifolium
(tiger lily)
Lilium
martagon
(Martagon Lily)
Lilium
michiganense
(Michigan lily)
Lilium
nepalense
(Nepal Lily)
Lilium
(Orienpet
Hybrids)
(orienpet lilies)
Lilium
(Oriental
Hybrids)
(oriental lilies)
Lilium
pardalinum
(Leopard Lily)
Lilium
philadelphicum
(Wood Lily)
Lilium
pumilum
(Coral Lily)
Lilium
regale
(Regal Lily)
Lilium
spp.
(true lilies)
Lilium
superbum
(Turk's-cap lily)
Limbarda
crithmoides
(Golden Samphire)
Limbarda
spp.
Limonium
carolinianum
(Carolina Sea Lavender)
Limonium
platyphyllum
(Broad-leaved Sea Lavender)
Limonium
spp.
(Sea-Lavenders)
Limonium
vulgare
(Common Sea-lavender)
Linanthus
pungens
(Granite Prickly Phlox)
Linanthus
spp.
Linaria
canadensis
(Canada toadflax)
Linaria
dalmatica
(Balkan toadflax)
Linaria
purpurea
(toadflax)
Linaria
repens
(Pale Toadflax)
Linaria
spp.
(Toadflaxes)
Linaria
texana
(Texas toadflax)
Linaria
vulgaris
(common toadflax)
Lindera
benzoin
(northern spicebush)
Lindera
obtusiloba
(Japanese Spicebush)
Lindera
spp.
(spicebushes)
Lindheimera
spp.
Lindheimera
texana
(Texas yellow star)
Lindsaea
linearis
(Screw Fern)
Lindsaea
microphylla
(lacy wedge fern)
Lindsaea
spp.
Linnaea
borealis
(twinflower)
Linnaea
spp.
Linospadix
monostachyus
(Walking stick palm)
Linospadix
spp.
Linum
bienne
(Pale flax)
Linum
catharticum
(Fairy Flax)
Linum
grandiflorum
(Scarlet Flax)
Linum
lewisii
(Lewis flax)
Linum
marginale
(Australian Flax)
Linum
perenne
(Perennial Flax)
Linum
spp.
(Flaxes)
Linum
usitatissimum
(common flax)
Liquidambar
spp.
(sweetgums)
Liquidambar
styraciflua
(sweetgum)
Liquidambar
styraciflua
'Worplesdon'
(Worplesdon Sweet Gum)
Liriodendron
spp.
(Tulip trees)
Liriodendron
tulipifera
(tulip tree)
Liriodendron
tulipifera
'Aureomarginatum'
(Variegated Tulip Tree)
Liriodendron
tulipifera
'Fastigiatum'
(Fastigiate Tulip Tree)
Liriope
(lilyturf)
Liriope
muscari
(lily turf)
Liriope
muscari
'Big Blue'
(Big Blue Lilyturf)
Liriope
muscari
'Monroe White'
(Monroe White Lilyturf)
Liriope
muscari
'Royal Purple'
(Royal Purple Lilyturf)
Liriope
muscari
'Variegata'
(Variegated Lilyturf)
Liriope
spicata
(Creeping Lilyturf)
Lissanthe
spp.
Lissanthe
strigosa
(peach heath)
Litchi
spp.
(Lychee)
Lithocarpus
densiflorus
(Tanoak)
Lithocarpus
spp.
(Stone Oak)
Lithodora
diffusa
(Lithodora)
Lithodora
spp.
Lithophragma
affine
(San Francisco woodland-star)
Lithophragma
heterophyllum
(hillside woodland star)
Lithophragma
parviflorum
(smallflower woodland star)
Lithophragma
spp.
(woodland stars)
Lithospermum
canescens
(hoary puccoon)
Lithospermum
caroliniense
(hairy puccoon)
Lithospermum
incisum
(narrowleaf puccoon)
Lithospermum
officinale
(Common Gromwell)
Lithospermum
ruderale
(western stoneseed)
Lithospermum
spp.
(stoneseeds, puccoons, and gromwells)
Lithothamnion
spp.
(Crustose coralline algae)
Lithotoma
axillaris
(rock isotome)
Lithotoma
spp.
Livistona
australis
(Australian Fan Palm)
Livistona
chinensis
(Chinese Fan Palm)
Livistona
spp.
(Fan palms)
Lobelia
anceps
(angled lobelia)
Lobelia
cardinalis
(cardinal flower)
Lobelia
erinus
(bedding lobelia)
Lobelia
gibbosa
(tall lobelia)
Lobelia
inflata
(Indian tobacco)
Lobelia
laxiflora
var.
angustifolia
(Narrow-leaved Mexican Lobelia)
Lobelia
puberula
(downy lobelia)
Lobelia
purpurascens
(White Root)
Lobelia
siphilitica
(Great Blue Lobelia)
Lobelia
spicata
(pale-spiked lobelia)
Lobelia
spp.
(Lobelias)
Lobelia
trigonocaulis
(forest lobelia)
Lobelia
tupa
(Devil's Tobacco)
Lobularia
maritima
(sweet alyssum)
Lobularia
spp.
(Sweet Alyssum)
Lolium
arundinaceum
(tall fescue)
Lolium
×
boucheanum
(Hybrid Ryegrass)
Lolium
perenne
(Perennial Ryegrass)
Lolium
spp.
(Ryegrasses)
Lomandra
confertifolia
(clumped matrush)
Lomandra
filiformis
(wattle mat-rush)
Lomandra
hystrix
(green mat-rush)
Lomandra
longifolia
(Spiny-headed Mat Rush)
Lomandra
multiflora
(Many Flowered Matrush)
Lomandra
obliqua
(Fish Bones)
Lomandra
spp.
(Mat-rushes)
Lomatia
ilicifolia
(Holly Lomatia)
Lomatia
myricoides
(River Lomatia)
Lomatia
silaifolia
(Crinkle Bush)
Lomatia
spp.
Lomatium
dasycarpum
(woollyfruit desertparsley)
Lomatium
dissectum
(Fernleaf Biscuitroot)
Lomatium
spp.
(Biscuitroots)
Lomatium
triternatum
(Ternate Desert-parsley)
Lomatium
utriculatum
(Spring Gold Biscuitroot)
Lonicera
×
bella
(showy fly honeysuckle)
Lonicera
canadensis
(American fly-honeysuckle)
Lonicera
ciliosa
(trumpet honeysuckle)
Lonicera
fragrantissima
(Winter honeysuckle)
Lonicera
hispidula
(Pink Honeysuckle)
Lonicera
involucrata
(twinberry honeysuckle)
Lonicera
japonica
'Aureoreticulata'
(Golden Net Honeysuckle)
Lonicera
ligustrina
(Boxleaf Honeysuckle)
Lonicera
ligustrina
var.
yunnanensis
(box honeysuckle)
Lonicera
ligustrina
var.
yunnanensis
'Baggesen'
s
Gold'
(Golden box honeysuckle)
Lonicera
maackii
(Amur honeysuckle)
Lonicera
morrowii
(Morrow's honeysuckle)
Lonicera
nitida
(Boxleaf Honeysuckle)
Lonicera
periclymenum
(Woodbine)
Lonicera
pileata
(box-leaved honeysuckle)
Lonicera
×
purpusii
(Winter Beauty Honeysuckle)
Lonicera
sempervirens
(Coral Honeysuckle)
Lonicera
spp.
(honeysuckles)
Lonicera
subspicata
(Southern Honeysuckle)
Lonicera
tatarica
(Tatarian honeysuckle)
Lonicera
xylosteum
(Fly Honeysuckle)
Lophiolepis
eriophora
(Woolly Thistle)
Lophiolepis
spp.
Lophocolea
bidentata
(Bifid Crestwort)
Lophocolea
semiteres
(Southern Crestwort)
Lophocolea
spp.
Lophostemon
confertus
(Brush Box)
Lophostemon
spp.
Lophostemon
suaveolens
(swamp box)
Loropetalum
chinense
(Jazz Hands® Pink Loropetalum)
Loropetalum
chinense
var.
rubrum
(Ruby Loropetalum)
Loropetalum
spp.
(fringe flowers)
Lotus
corniculatus
(bird's-foot trefoil)
Lotus
pedunculatus
(big bird's-foot trefoil)
Lotus
spp.
(bird's-foot trefoils)
Ludwigia
alternifolia
(Seedbox)
Ludwigia
octovalvis
(Mexican Primrose-willow)
Ludwigia
palustris
(Water Purslane)
Ludwigia
peploides
(floating primrose-willow)
Ludwigia
peruviana
(Peruvian primrose-willow)
Ludwigia
spp.
(Primrose-willows)
Lunaria
annua
(moneyplant)
Lunaria
rediviva
(Perennial Honesty)
Lunaria
spp.
Lunularia
cruciata
(Crescent-cup liverwort)
Lunularia
spp.
Lupinus
albicaulis
(Sicklekeel Lupine)
Lupinus
albifrons
(Silver Bush Lupine)
Lupinus
arboreus
(coastal bush lupine)
Lupinus
argenteus
(silvery lupine)
Lupinus
arizonicus
(Arizona lupine)
Lupinus
bicolor
(Miniature Lupine)
Lupinus
concinnus
(bajada lupine)
Lupinus
hirsutissimus
(Stinging Lupine)
Lupinus
latifolius
(wild lupine)
Lupinus
lepidus
(Dwarf Lupine)
Lupinus
microcarpus
(chick lupine)
Lupinus
nanus
(Sky Lupine)
Lupinus
perennis
(Sundial Lupine)
Lupinus
polyphyllus
(garden lupine)
Lupinus
rivularis
(Riverbank Lupine)
Lupinus
sparsiflorus
(Coulter's lupine)
Lupinus
spp.
(lupines)
Lupinus
succulentus
(arroyo lupine)
Lupinus
texensis
(Texas bluebonnet)
Lupinus
truncatus
(collared annual lupine)
Luzula
campestris
(Field woodrush)
Luzula
meridionalis
(Common Wood-rush)
Luzula
nivea
(Snowy Woodrush)
Luzula
parviflora
(small-flowered wood rush)
Luzula
pilosa
(Hairy Woodrush)
Luzula
spp.
(woodrushes)
Luzula
sylvatica
(Great Woodrush)
Lychnis
alpina
(Alpine Campion)
Lychnis
chalcedonica
(Maltese cross)
Lychnis
coronaria
(rose campion)
Lychnis
flos-cuculi
(Ragged Robin)
Lychnis
spp.
Lycianthes
spp.
(Blue potato bush and relatives)
Lycium
andersonii
(Anderson Thornbush)
Lycium
barbarum
(Goji Berry)
Lycium
ferocissimum
(African boxthorn)
Lycium
spp.
(boxthorns)
Lycopodium
clavatum
(stag's-horn clubmoss)
Lycopodium
deuterodensum
(Bushy Clubmoss)
Lycopodium
spp.
(ground and creeping clubmosses)
Lycopus
americanus
(American bugleweed)
Lycopus
europaeus
(European water-horehound)
Lycopus
spp.
(water horehounds)
Lycopus
uniflorus
(northern bugleweed)
Lycoris
radiata
(red spider lily)
Lycoris
spp.
Lycoris
squamigera
(Surprise Lily)
Lygodesmia
spp.
Lygodesmia
texana
(Texas Skeleton Plant)
Lygodium
japonicum
(Japanese climbing fern)
Lygodium
spp.
(climbing ferns)
Lyonia
fruticosa
(coastal plain staggerbush)
Lyonia
ligustrina
(He-huckleberry)
Lyonia
lucida
(fetterbush lyonia)
Lyonia
spp.
Lyperanthus
spp.
Lyperanthus
suaveolens
(brown beaks)
Lysiana
exocarpi
(Harlequin Mistletoe)
Lysiana
spp.
Lysichiton
americanus
(swamp lanterns, skunk cabbage)
Lysichiton
spp.
Lysimachia
arvensis
(scarlet pimpernel)
Lysimachia
atropurpurea
(Beaujolais' Purple Loosestrife)
Lysimachia
borealis
(northern starflower)
Lysimachia
ciliata
'Purpurea'
(purple leaf loosestrife)
Lysimachia
clethroides
(Gooseneck Loosestrife)
Lysimachia
europaea
(Arctic Starflower)
Lysimachia
latifolia
(Western Starflower)
Lysimachia
loeflingii
(Blue Scarlet Pimpernel)
Lysimachia
maritima
(Sea Milkwort)
Lysimachia
nemorum
(Yellow Pimpernel)
Lysimachia
nummularia
(creeping Jenny)
Lysimachia
punctata
(Dotted Loosestrife)
Lysimachia
quadrifolia
(whorled loosestrife)
Lysimachia
spp.
(Loosestrifes)
Lysimachia
tenella
(Bog Pimpernel)
Lysimachia
terrestris
(swamp candles)
Lysimachia
vulgaris
(Yellow Loosestrife)
Lythrum
alatum
(Winged Loosestrife)
Lythrum
hyssopifolia
(Hyssop Loosestrife)
Lythrum
salicaria
(purple loosestrife)
Lythrum
spp.
(Lythrum Loosestrifes)
Maackia
amurensis
(Amur Maackia)
Maackia
spp.
(Maackia)
Macadamia
integrifolia
(Macadamia Nut)
Macadamia
spp.
Macaranga
spp.
Macaranga
tanarius
(Elephant's Ear)
Machaeranthera
spp.
Machaeranthera
tanacetifolia
(Tahoka daisy)
Macleaya
cordata
(plume poppy)
Macleaya
spp.
Maclura
cochinchinensis
(Cockspur Thorn)
Maclura
pomifera
(Osage-orange)
Maclura
spp.
Macroptilium
atropurpureum
(Purple Bush-Bean)
Macroptilium
lathyroides
(Phasey Bean)
Macroptilium
spp.
Macrozamia
communis
(burrawang)
Macrozamia
riedlei
(Zamia Palm)
Macrozamia
spp.
Madia
elegans
(Common Madia)
Madia
gracilis
(grassy tarweed)
Madia
spp.
(tarweeds)
Magnolia
acuminata
(Cucumber Tree)
Magnolia
campbellii
(Campbell's Magnolia)
Magnolia
cylindrica
(Cylindrical Magnolia)
Magnolia
dawsoniana
(Dawson's Magnolia)
Magnolia
delavayi
(Delavay's Magnolia)
Magnolia
denudata
(Yulan Magnolia)
Magnolia
'Elizabeth'
(Elizabeth Magnolia)
Magnolia
fraseri
(Fraser Magnolia)
Magnolia
'Galaxy'
(Galaxy Magnolia)
Magnolia
grandiflora
(southern magnolia)
Magnolia
grandiflora
'Edith Bogue'
(Edith Bogue Magnolia)
Magnolia
grandiflora
'Little Gem'
(Little Gem Magnolia)
Magnolia
'Iolanthe'
(Iolanthe Magnolia)
Magnolia
'Jane'
(Jane Magnolia)
Magnolia
kobus
(Kobus Magnolia)
Magnolia
laevifolia
(Smooth-leaved Magnolia)
Magnolia
liliiflora
(Lily Magnolia)
Magnolia
liliiflora
'Nigra'
(Black Lily Magnolia)
Magnolia
×
loebneri
'Leonard Messel'
(Leonard Messel Magnolia)
Magnolia
macrophylla
(Bigleaf Magnolia)
Magnolia
maudiae
(Maud's Magnolia)
Magnolia
maudiae
var.
platypetala
(Broad-petaled Maud's Magnolia)
Magnolia
salicifolia
(Anise Magnolia)
Magnolia
sargentiana
(Sargent's Magnolia)
Magnolia
sieboldii
(Oyama magnolia)
Magnolia
×
soulangeana
(saucer magnolia)
Magnolia
spp.
(magnolias)
Magnolia
sprengeri
(Sprenger's Magnolia)
Magnolia
stellata
(star magnolia)
Magnolia
stellata
'Royal Star'
(Royal Star Magnolia Tree)
Magnolia
×
'Susan'
(Susan Magnolia Bush)
Magnolia
tripetala
(umbrella magnolia)
Magnolia
virginiana
(Sweetbay Magnolia)
Magnolia
wilsonii
(Wilson's Magnolia)
Mahonia
aquifolium
(Oregon grape)
Mahonia
bealei
(Leatherleaf mahonia)
Mahonia
nervosa
(dwarf Oregon grape)
Mahonia
repens
(creeping mahonia)
Mahonia
spp.
Mahonia
x
media
(hybrid mahonia)
Maianthemum
bifolium
(May Lily)
Maianthemum
canadense
(Canada mayflower)
Maianthemum
dilatatum
(false lily of the valley)
Maianthemum
racemosum
(false Solomon's Seal)
Maianthemum
spp.
(mayflowers and false Solomon's seals)
Maianthemum
stellatum
(star-flowered false Solomon's seal)
Maianthemum
tatsienense
(Chinese False Solomon's Seal)
Maireana
brevifolia
(Short-leaf Bluebush)
Maireana
spp.
Malacothamnus
fasciculatus
(southern coastal bushmallow)
Malacothamnus
spp.
(bushmallows)
Malacothrix
glabrata
(desert dandelion)
Malacothrix
saxatilis
(Cliff Aster)
Malacothrix
spp.
Malaisia
scandens
(Burnie Vine)
Malaisia
spp.
Malephora
spp.
(Fingerfigs)
Mallotus
claoxyloides
(Green Kamala)
Mallotus
philippensis
(Kamala)
Mallotus
spp.
Malosma
laurina
(laurel sumac)
Malosma
spp.
Malpighia
emarginata
(Acerola Cherry)
Malpighia
spp.
Malus
(crabapple)
Malus
'Adirondack'
(Adirondack Crabapple)
Malus
baccata
(Siberian crabapple)
Malus
'Butterball'
(Crabapple)
Malus
domestica
(apple)
Malus
domestica
'Pristine'
(Pristine Apple)
Malus
'Evereste'
(Evereste Crabapple)
Malus
×
floribunda
(Japanese Crabapple)
Malus
floribunda
(Crabapple)
Malus
fusca
(crabapple)
Malus
hupehensis
(Tea Crabapple)
Malus
sargentii
(Sargent Crabapple Tree)
Malus
sylvestris
(European Wild Apple)
Malus
toringo
'Tina'
(Tina Crabapple)
Malus
'Van Eseltine'
(Van Eseltine Crabapple)
Malva
arborea
(Tree Mallow)
Malva
moschata
(musk mallow)
Malva
multiflora
(Cretan mallow)
Malva
neglecta
(dwarf mallow, cheese plant)
Malva
parviflora
(cheeseweed mallow)
Malva
spp.
(Mallows)
Malvastrum
coromandelianum
(three-lobe false mallow)
Malvastrum
spp.
(false mallow)
Malva
sylvestris
(Common Mallow)
Malvaviscus
arboreus
(Turk's cap)
Malvaviscus
spp.
(Turk's cap mallows)
Mammillaria
spp.
(pincushion cactuses)
Mandevilla
sanderi
(Pink Mandevilla)
Mandevilla
spp.
(Rocktrumpets)
Manfreda
spp.
(False Agave)
Mangave
spp.
(Mangave)
Mangifera
spp.
(mangoes)
Manihot
spp.
(Cassavas)
Marah
fabacea
(California manroot)
Marah
macrocarpa
(Chilicothe)
Marah
oregana
(bigroot, manroot)
Marah
spp.
(Man-roots)
Maranta
leuconeura
(Prayer Plant)
Maranta
leuconeura
'Lemon Lime'
(Lemon Lime Prayer Plant)
Maranta
leuconeura
var.
erythroneura
(Red Prayer Plant)
Maranta
spp.
Marchantia
polymorpha
(Common Liverwort)
Marchantia
spp.
(Liverworts)
Marrubium
incanum
(Silver Horehound)
Marrubium
spp.
Marrubium
vulgare
(White Horehound)
Marsilea
drummondii
(Common Nardoo)
Marsilea
spp.
Matelea
reticulata
(Pearl Milkweed)
Matelea
spp.
Matricaria
chamomilla
(German Chamomile)
Matricaria
discoidea
(pineapple weed)
Matricaria
spp.
(German chamomiles and pineapple-weeds)
Matteuccia
spp.
Matteuccia
struthiopteris
(Ostrich Fern)
Matthiola
bicornis
(night-scented stock)
Matthiola
spp.
(Stock)
Maurandella
antirrhiniflora
(Snapdragon Vine)
Maurandella
spp.
Maxillaria
spp.
(tiger orchids)
Mazus
pumilus
(Asian mazus)
Mazus
spp.
Meconopsis
'Lingholm'
(blue poppy)
Meconopsis
spp.
Medeola
spp.
Medeola
virginiana
(Cucumber Root)
Medicago
arabica
(Spotted medick)
Medicago
lupulina
(black medic)
Medicago
polymorpha
(bur clover)
Medicago
sativa
(Alfalfa)
Medicago
spp.
(medicks)
Megathyrsus
maximus
(Guinea Grass)
Megathyrsus
spp.
Melaleuca
alternifolia
(Tea Tree)
Melaleuca
armillaris
(Bracelet Honey-myrtle)
Melaleuca
bracteata
(black tea-tree)
Melaleuca
citrina
(crimson bottlebrush)
Melaleuca
decussata
(Totem-poles)
Melaleuca
ericifolia
(Swamp Paperbark)
Melaleuca
fulgens
(Scarlet Honey-myrtle)
Melaleuca
lanceolata
(Moonah)
Melaleuca
leucadendra
(Weeping Paperbark)
Melaleuca
linariifolia
(Snow-in-Summer)
Melaleuca
linearis
(Narrow-leaved Bottlebrush)
Melaleuca
nesophila
(Showy Honey-myrtle)
Melaleuca
nodosa
(prickly-leaved paperbark)
Melaleuca
paludicola
(river bottlebrush)
Melaleuca
quadrifida
(One-sided Bottlebrush)
Melaleuca
quinquenervia
(Broad-leaved paperbark)
Melaleuca
salicina
(Willow bottlebrush)
Melaleuca
spp.
(bottlebrushes)
Melaleuca
squamea
(swamp honey-myrtle)
Melaleuca
squarrosa
(scented paperbark)
Melaleuca
styphelioides
(Prickly-leaved Paperbark)
Melaleuca
thymifolia
(thyme honey-myrtle)
Melaleuca
uncinata
(broombush)
Melaleuca
velutina
(Barrens Regelia)
Melaleuca
viminalis
(weeping bottlebrush)
Melampodium
leucanthum
(blackfoot daisy)
Melampodium
spp.
Melampyrum
lineare
(narrowleaf cow wheat)
Melampyrum
pratense
(Common Cow-wheat)
Melampyrum
spp.
Melastoma
malabathricum
(Malabar Melastome)
Melastoma
spp.
(melastomes)
Melia
azedarach
(Chinaberry)
Melianthus
spp.
(Honey Bush)
Melia
spp.
Melica
altissima
'Atropurpurea'
(Siberian Melic)
Melica
nutans
(Nodding Melick)
Melica
spp.
(melicgrasses)
Melica
uniflora
(Wood Melick)
Melichrus
spp.
Melichrus
urceolatus
(urn heath)
Melicope
elleryana
(pink-flowered doughwood)
Melicope
spp.
Melicytus
dentatus
(tree violet)
Melicytus
spp.
Melilotus
albus
(White Sweetclover)
Melilotus
altissimus
(tall melilot)
Melilotus
indicus
(small melilot)
Melilotus
officinalis
(Yellow Sweetclover)
Melilotus
spp.
(melilots and sweetclovers)
Melinis
repens
(Natal Grass)
Melinis
spp.
Meliosma
spp.
(Meliosma)
Meliosma
veitchiorum
(Veitch's Meliosma)
Melissa
officinalis
(Lemon Balm)
Melissa
spp.
Melittis
melissophyllum
subsp.
albida
(Bastard Balm)
Melittis
spp.
Melothria
pendula
(creeping cucumber)
Melothria
spp.
Menispermum
canadense
(moonseed)
Menispermum
spp.
Mentha
aquatica
(watermint)
Mentha
canadensis
(Wild Mint)
Mentha
×
piperita
(Peppermint)
Mentha
pulegium
(Pennyroyal)
Mentha
spicata
(Spearmint)
Mentha
spp.
(mints)
Mentha
suaveolens
(Apple Mint)
Mentzelia
albicaulis
(Whitestem Blazingstar)
Mentzelia
involucrata
(sand blazingstar)
Mentzelia
laevicaulis
(Giant Blazingstar)
Mentzelia
spp.
(Blazingstars)
Menyanthes
spp.
Menyanthes
trifoliata
(Bogbean)
Mercurialis
annua
(Annual mercury)
Mercurialis
perennis
(Dog's Mercury)
Mercurialis
spp.
Mertensia
ciliata
(mountain bluebells)
Mertensia
platyphylla
(Broadleaf Bluebell)
Mertensia
spp.
(Bluebells)
Mertensia
virginica
(Virginia Bluebells)
Mesembryanthemum
crystallinum
(Crystalline ice plant)
Mesembryanthemum
spp.
(ice plants)
Mespilus
germanica
(Medlar)
Mespilus
spp.
(Medlar)
Metalasia
spp.
(Blombushes)
Metasequoia
glyptostroboides
(dawn redwood)
Metasequoia
spp.
(dawn redwoods)
Metrosideros
polymorpha
(ʻŌhiʻa Lehua)
Metrosideros
spp.
(Rātā and allies)
Metzgeria
furcata
(Forked Veilwort)
Metzgeria
spp.
Metzgeria
violacea
(Bluish Veilwort)
Meum
athamanticum
(Spignel)
Meum
spp.
Miconia
spp.
Micranthes
californica
(California Saxifrage)
Micranthes
spp.
(Early saxifrages)
Micranthes
stellaris
(Hairy Kidney-wort)
Micranthes
virginiensis
(Virginia saxifrage)
Microbiota
decussata
(Russian Cypress)
Microbiota
spp.
Microgramma
spp.
(Snakeferns)
Microlaena
spp.
Microlaena
stipoides
(Weeping-grass)
Micropus
californicus
(Q-tips)
Micropus
spp.
Microseris
spp.
Microseris
walteri
(Murnong)
Microsorum
diversifolium
(Kangaroo Paw Fern)
Microsorum
musifolium
(Crocodile Fern)
Microsorum
pustulatum
(hound's tongue fern)
Microsorum
spp.
(Snakeferns)
Microsorum
thailandicum
(Blue Oil Fern)
Microstegium
spp.
Microstegium
vimineum
(Japanese stiltgrass)
Microsteris
gracilis
(slender phlox)
Microsteris
spp.
Microtis
arenaria
(Pale Onion-orchid)
Microtis
parviflora
(slender onion-orchid)
Microtis
spp.
(Onion Orchids)
Microtis
unifolia
(common onion-orchid)
Mikania
scandens
(climbing hempvine)
Mikania
spp.
(hempvines)
Milium
effusum
(Wood Millet)
Milium
spp.
Mimosa
microphylla
(littleleaf sensitive-briar)
Mimosa
nuttallii
(Catclaw Briar)
Mimosa
pudica
(Sensitive Plant)
Mimosa
quadrivalvis
(Fourvalve Mimosa)
Mimosa
spp.
(Sensitive Plants)
Mimosa
strigillosa
(sunshine mimosa)
Mimulus
alatus
(sharpwing monkeyflower)
Mimulus
ringens
(Allegheny monkeyflower)
Mimulus
spp.
Mirabilis
jalapa
(Marvel of Peru)
Mirabilis
laevis
(Wishbone Bush)
Mirabilis
multiflora
(Colorado Four o'Clock)
Mirabilis
nyctaginea
(Wild Four o'Clock)
Mirabilis
spp.
(four o'clocks)
Mirbelia
rubiifolia
(Heathy Mirbelia)
Mirbelia
spp.
Miscanthus
sinensis
(Miscanthus)
Miscanthus
sinensis
'Cosmopolitan'
(Cosmopolitan Maiden Grass)
Miscanthus
sinensis
'Gracillimus'
(Gracillimus Maiden Grass)
Miscanthus
sinensis
'Morning Light'
(Morning Light Maiden Grass)
Miscanthus
sinensis
'Silberfeder'
(Silver Feather Maiden Grass)
Miscanthus
sinensis
'Strictus'
(Porcupine Grass)
Miscanthus
sinensis
'Variegatus'
(Variegated Maiden Grass)
Miscanthus
sinensis
'Zebrinus'
(Zebra Grass)
Miscanthus
spp.
(Silvergrasses)
Mitchella
repens
(partridgeberry)
Mitchella
spp.
Mitella
breweri
(Brewer's Mitrewort)
Mitella
diphylla
(twoleaf miterwort)
Mitella
ovalis
(Coastal Miterwort)
Mitella
spp.
Mitellastra
caulescens
(Leafy Miterwort)
Mitellastra
spp.
Mitrasacme
polymorpha
(Mitre Weed)
Mitrasacme
spp.
Mnium
hornum
(Horn Calcareous Moss)
Mnium
spp.
Modiola
caroliniana
(Bristly Mallow)
Modiola
spp.
Moehringia
spp.
Moehringia
trinervia
(Three-nerved Sandwort)
Molinia
caerulea
'Variegata'
(Variegated Purple Moor Grass)
Molinia
spp.
Mollugo
spp.
Mollugo
verticillata
(green carpetweed)
Moltkia
doerfleri
(Doerfler's Moltkia)
Moltkia
spp.
Momordica
charantia
(Bitter Melon)
Momordica
spp.
Monarda
(beebalms and bergamots)
Monarda
bradburiana
(Eastern Bee Balm)
Monarda
citriodora
(lemon beebalm)
Monarda
didyma
(Bee Balm)
Monarda
didyma
'Jacob Cline'
(Jacob Cline Bee Balm)
Monarda
fistulosa
(Wild Bergamot)
Monarda
'Gardenview Scarlet'
(Bee Balm Gardenview Scarlet)
Monarda
'Marshall'
s
Delight'
(Marshall's Delight Bee Balm)
Monarda
'Petite Delight'
(Petite Delight Bee Balm)
Monarda
punctata
(spotted horsemint)
Monarda
spp.
(Bee Balm Mix)
Monardella
odoratissima
(mountain coyote mint)
Monardella
spp.
(Monardellas)
Monardella
villosa
(Coyote Mint)
Monnina
spp.
Monoptilon
bellioides
(Mojave desertstar)
Monoptilon
spp.
Monotoca
elliptica
(Tree Broom-heath)
Monotoca
scoparia
(Prickly Broom-heath)
Monotoca
spp.
Monotropa
hypopitys
(pinesap)
Monotropa
spp.
Monotropa
uniflora
(Ghost Pipe)
Monstera
adansonii
(Swiss Cheese Vine)
Monstera
deliciosa
(Swiss Cheese Plant)
Monstera
siltepecana
(Silver Monstera)
Monstera
spp.
(monsteras)
Montia
fontana
(blinks)
Montia
parvifolia
(Littleleaf Miner's-Lettuce)
Montia
spp.
Moraea
flaccida
(Great Tulip)
Moraea
setifolia
(Paper Glasstulp)
Moraea
spp.
(Cape Tulips)
Morella
californica
(California wax myrtle)
Morella
cerifera
(Wax Myrtle)
Morella
pensylvanica
(northern bayberry)
Morella
spp.
(Bayberries)
Moringa
oleifera
(Moringa)
Moringa
spp.
(Moringas)
Morus
alba
(White Mulberry)
Morus
rubra
(red mulberry)
Morus
spp.
(Mulberries)
Muehlenbeckia
adpressa
(Climbing Lignum)
Muehlenbeckia
spp.
Muellerina
eucalyptoides
(creeping mistletoe)
Muellerina
spp.
Muhlenbergia
capillaris
(Pink Muhly Grass)
Muhlenbergia
dumosa
(Bamboo Muhly)
Muhlenbergia
lindheimeri
(Lindheimer's Muhly)
Muhlenbergia
reverchonii
(Seep Muhly)
Muhlenbergia
rigens
(deergrass)
Muhlenbergia
spp.
(muhly)
Mukdenia
rossii
'Karasuba'
(Karasuba Mukdenia)
Mukdenia
spp.
Mummenhoffia
alliacea
(garlic penny-cress)
Mummenhoffia
spp.
Muraltia
spp.
(Purplegorses)
Murdannia
graminea
(Grass Lily)
Murdannia
spp.
Murraya
spp.
(Orange jasmine and curry tree)
Musa
acuminata
(Dwarf Banana Plant)
Musa
basjoo
(Hardy Banana)
Musa
×
paradisiaca
(Plantain)
Musa
spp.
(Bananas)
Musa
textilis
(abacá, Manila hemp)
Muscari
armeniacum
(grape hyacinth)
Muscari
botryoides
(common grape hyacinth)
Muscari
latifolium
(Broad-leaved Grape Hyacinth)
Muscari
neglectum
(Musk Hyacinth)
Muscari
spp.
(Grape hyacinths)
Mussaenda
spp.
Mutarda
arvensis
(charlock)
Mutarda
nigra
(Black Mustard)
Mutarda
spp.
Mycelis
muralis
(wall lettuce)
Mycelis
spp.
Myoporum
boninense
(Boobialla)
Myoporum
insulare
(common boobialla)
Myoporum
montanum
(waterbush)
Myoporum
parvifolium
(Creeping Boobialla)
Myoporum
petiolatum
(Sticky Boobialla)
Myoporum
spp.
(Ngaios)
Myosotis
arvensis
(field forget-me-not)
Myosotis
discolor
(Changing Forget-me-not)
Myosotis
latifolia
(broadleaf forget-me-not)
Myosotis
ramosissima
(Early Forget-me-not)
Myosotis
scorpioides
(water forget-me-not)
Myosotis
spp.
(Forget-me-nots)
Myosotis
sylvatica
(forget-me-not)
Myosotis
sylvatica
'Bluesylva'
(Bluesylva Forget-Me-Not)
Myosotis
sylvatica
'Rosylva'
(Rosylva Forget-Me-Not)
Myrica
californica
(California Wax Myrtle; California Bayberry)
Myrica
gale
(Sweetgale)
Myrica
spp.
Myriophyllum
aquaticum
(parrotfeather)
Myriophyllum
spicatum
(Eurasian watermilfoil)
Myriophyllum
spp.
(Milfoils)
Myriopteris
spp.
(lip ferns)
Myrrhis
odorata
(sweet cicely)
Myrrhis
spp.
Myrsine
howittiana
(Brush Muttonwood)
Myrsine
spp.
(Colicwood)
Myrsine
variabilis
(Variable Muttonwood)
Myrtus
communis
(Common Myrtle)
Myrtus
spp.
Nabalus
albus
(white rattlesnake root)
Nabalus
altissimus
(tall rattlesnake root)
Nabalus
spp.
(rattlesnake roots)
Nabalus
trifoliolatus
(three-leaved rattlesnake root)
Nandina
domestica
(Heavenly bamboo)
Narcissus
(daffodil)
Narcissus
'February Gold'
(February Gold Daffodil)
Narcissus
×
incomparabilis
(Nonesuch Daffodil)
Narcissus
'Jack Snipe'
(Jack Snipe Daffodil)
Narcissus
'King Alfred'
(King Alfred Daffodil)
Narcissus
×
medioluteus
(Primrose-peerless)
Narcissus
'Mount Hood'
(Mount Hood Daffodil)
Narcissus
poeticus
var.
recurvus
(Poet's Narcissus)
Narcissus
pseudonarcissus
(wild daffodil)
Narcissus
'Saint Keverne'
(Saint Keverne Daffodil)
Narcissus
'Thalia'
(Thalia Daffodil)
Narthecium
ossifragum
(bog asphodel)
Narthecium
spp.
Nassella
pulchra
(purple needlegrass)
Nassella
spp.
Nassella
tenuissima
(Mexican feather/hair grass)
Nasturtium
officinale
(Watercress)
Nasturtium
spp.
(Watercresses)
Nectaroscordum
siculum
(Sicilian Honey Garlic)
Neillia
affinis
(Chinese Neillia)
Neillia
spp.
(Neillia)
Nekemias
arborea
(peppervine)
Nekemias
spp.
Neltuma
glandulosa
(honey mesquite)
Neltuma
odorata
(western honey mesquite)
Neltuma
spp.
(mesquites)
Neltuma
velutina
(velvet mesquite)
Nelumbo
lutea
(American lotus)
Nelumbo
spp.
Nematanthus
(Goldfish Plant)
Nematanthus
spp.
(goldfish plant)
Nemesia
spp.
(Lionfaces)
Nemophila
heterophylla
(White nemophila)
Nemophila
menziesii
(Menzies' baby blue eyes)
Nemophila
phacelioides
(Texas baby blue eyes)
Nemophila
spp.
(baby blue eyes and allies)
Neolitsea
dealbata
(Bolly Gum)
Neolitsea
sericea
(White-back Neolitsia)
Neolitsea
spp.
Neoregelia
spp.
(Neoregelia)
Neottia
nidus-avis
(bird's-nest orchid)
Neottia
ovata
(Common Twayblade)
Neottia
spp.
Nepenthes
spp.
(tropical pitcher-plants)
Nepeta
cataria
(Catnip)
Nepeta
govaniana
(Govan's Catmint)
Nepeta
racemosa
'Walker'
s
Low'
(Walker's Low catmint)
Nepeta
spp.
(catmints)
Nephroia
carolina
(Carolina snailseed)
Nephroia
spp.
Nephrolepis
cordifolia
(Fishbone Fern)
Nephrolepis
exaltata
(Boston Fern)
Nephrolepis
obliterata
(Kimberley Queen Fern)
Nephrolepis
spp.
(sword ferns)
Nerine
bowdenii
(Bowden's Nerine)
Nerine
spp.
(Nerine)
Nerium
spp.
(oleanders)
Neurachne
alopecuroidea
(foxtail mulga grass)
Neurachne
spp.
Nicandra
physalodes
(apple-of-Peru)
Nicandra
spp.
Nicotiana
alata
(flowering tobacco)
Nicotiana
glauca
(tree tobacco)
Nicotiana
obtusifolia
(desert tobacco)
Nicotiana
spp.
(tobaccos)
Nicotiana
sylvestris
(fragrant tobacco nightshade)
Nigella
damascena
(love-in-a-mist)
Nigella
spp.
(Love-in-a-mist)
Nitraria
billardierei
(nitre bush)
Nitraria
spp.
Noccaea
fendleri
(Fendler's pennycress)
Noccaea
spp.
Notelaea
longifolia
(Large Mock-olive)
Notelaea
microcarpa
(small-fruited mock olive)
Notelaea
spp.
Nothochelone
nemorosa
(Woodland Beardtongue)
Nothochelone
spp.
Nothofagus
antarctica
(Antarctic Beech)
Nothofagus
cunninghamii
(Myrtle Beech)
Nothofagus
dombeyi
(Dombey's Southern Beech)
Nothofagus
spp.
Notholithocarpus
densiflorus
(Tanoak)
Notholithocarpus
spp.
Nothoscordum
bivalve
(crowpoison)
Nothoscordum
spp.
(false garlic)
Nuphar
advena
(spatterdock)
Nuphar
lutea
(yellow water-lily)
Nuphar
polysepala
(western yellow pond-lily)
Nuphar
spp.
(yellow pond-lilies)
Nuphar
variegata
(Variegated Yellow Pond-Lily)
Nuytsia
floribunda
(Western Australian Christmas Tree)
Nuytsia
spp.
Nymphaea
alba
(European White Waterlily)
Nymphaea
×
marliacea
(coloured water-lily)
Nymphaea
odorata
(American white waterlily)
Nymphaea
spp.
(Waterlilies)
Nymphoides
indica
(Water Snowflake)
Nymphoides
peltata
(water fringe)
Nymphoides
spp.
Nyssa
sinensis
(Chinese Tupelo)
Nyssa
spp.
(Tupelos)
Nyssa
sylvatica
(sour gum, tupelo)
Obolaria
spp.
Obolaria
virginica
(pennywort)
Oceaniopteris
cartilaginea
(hammock fern)
Oceaniopteris
spp.
Ochna
serrulata
(Small-leaved plane)
Ochna
spp.
(Ochna)
Ocimum
basilicum
'Purple Ruffles'
(Purple Ruffles Basil)
Ocimum
×
citriodorum
(Lemon Basil)
Ocimum
spp.
(Basils)
Ocimum
tenuiflorum
(Holy Basil)
Oclemena
acuminata
(whorled wood aster)
Oclemena
spp.
Odontites
spp.
Odontites
vernus
(Red Bartsia)
Odontites
vulgaris
(Red Odontites)
Odontonema
spp.
(Firespike)
Oemleria
cerasiformis
(osoberry)
Oemleria
spp.
Oenanthe
crocata
(Hemlock Water-dropwort)
Oenanthe
pimpinelloides
(Corky-fruited Water-dropwort)
Oenanthe
sarmentosa
(water-parsley)
Oenanthe
spp.
Oenothera
biennis
(evening primrose)
Oenothera
capillifolia
(Berlandier's sundrops)
Oenothera
cespitosa
(fragrant evening primrose)
Oenothera
curtiflora
(velvetweed)
Oenothera
elata
(tall evening primrose)
Oenothera
fruticosa
(evening primrose)
Oenothera
gaura
(biennial beeblossom)
Oenothera
glazioviana
(Large-flowered Evening-primrose)
Oenothera
laciniata
(cutleaf evening primrose)
Oenothera
lindheimeri
(wandflower)
Oenothera
macrocarpa
(bigfruit evening primrose)
Oenothera
pallida
(Pale Evening Primrose)
Oenothera
parviflora
(northern evening-primrose)
Oenothera
speciosa
(pinkladies, pink evening primrose)
Oenothera
spp.
(evening primroses, sundrops, and beeblossoms)
Oenothera
suffrutescens
(Scarlet Beeblossom)
Oenothera
suffulta
(roadside gaura)
Oenothera
tetragona
(Sundrops)
Oenothera
triloba
(Stemless Evening Primrose)
Olea
europaea
(Olive Tree)
Olearia
argophylla
(musk daisy-bush)
Olearia
axillaris
(Coastal Daisy-Bush)
Olearia
lirata
(snowy daisy-bush)
Olearia
macrodonta
(New Zealand Holly)
Olearia
phlogopappa
(Asthma Bush)
Olearia
ramulosa
(Twiggy Daisy-Bush)
Olearia
spp.
(Daisybushes)
Olea
spp.
(Olives)
Olneya
spp.
Olneya
tesota
(desert ironwood)
Omphalodes
(navelwort)
Omphalodes
cappadocica
(Cappadocian Navelwort)
Omphalodes
verna
(Creeping Forget-me-not)
Oncidium
sphacelatum
(Spider Orchid Bush)
Oncidium
spp.
(dancing lady orchids)
Oncosiphon
pilulifer
(stinknet)
Oncosiphon
spp.
Onobrychis
spp.
(Sainfoins)
Onobrychis
viciifolia
(Sainfoin)
Onoclea
sensibilis
(sensitive fern)
Onoclea
spp.
Ononis
spinosa
(Spiny restharrow)
Ononis
spp.
(restharrows)
Onopordum
acanthium
(Scotch thistle)
Onopordum
spp.
(cotton thistles)
Ophioglossum
spp.
Ophioglossum
vulgatum
(southern adder's-tongue)
Ophiopogon
japonicus
(Mondo Grass)
Ophiopogon
planiscapus
(Mondo Grass)
Ophiopogon
planiscapus
'Nigrescens'
(Black mondo grass)
Ophiopogon
spp.
(Lily-Turfs)
Ophrys
apifera
(Bee Orchid)
Ophrys
insectifera
(Fly Orchid)
Ophrys
spp.
(Bee Orchids)
Oplismenus
hirtellus
(Basket Grass)
Oplismenus
spp.
(Basketgrasses)
Oplopanax
horridus
(devil's club)
Oplopanax
spp.
Opuntia
austrina
(Florida Pricklypear)
Opuntia
basilaris
(Beavertail Pricklypear)
Opuntia
cespitosa
(Eastern Pricklypear)
Opuntia
×
columbiana
(Columbia Pricklypear)
Opuntia
×
demissa
(Prickly Pear)
Opuntia
engelmannii
(Engelmann's Pricklypear)
Opuntia
ficus-indica
(Prickly Pear Cactus)
Opuntia
fragilis
(Brittle Pricklypear)
Opuntia
humifusa
(low pricklypear)
Opuntia
lindheimeri
(Texas Pricklypear)
Opuntia
littoralis
(Coastal Pricklypear)
Opuntia
macrorhiza
(prairie pricklypear)
Opuntia
microdasys
(Bunny Ears Cactus)
Opuntia
phaeacantha
(Brown-spined Pricklypear)
Opuntia
polyacantha
(Plains Pricklypear)
Opuntia
santa-rita
(Santa Rita Prickly Pear)
Opuntia
spp.
(Prickly Pears)
Opuntia
tomentosa
(Woollyjoint Pricklypear)
Opuntia
×
vaseyi
(Vasey's Pricklypear)
Orchis
anthropophora
(Man Orchid)
Orchis
mascula
(Early Purple Orchid)
Orchis
purpurea
(Lady Orchid)
Orchis
spp.
Oreocarya
spp.
(Perennial Cryptanthas)
Oreopanax
spp.
(oreopanax)
Oreopteris
limbosperma
(Lemon-scented Fern)
Oreopteris
spp.
Oreostemma
alpigenum
(Alpine Aster)
Oreostemma
spp.
Origanum
dictamnus
(dittany of Crete)
Origanum
majorana
(Sweet Marjoram)
Origanum
spp.
(Marjorams)
Origanum
vulgare
(Oregano)
Origanum
vulgare
'Aureum'
(golden oregano)
Ornithogalum
candicans
(Summer hyacinth)
Ornithogalum
spp.
(star-of-Bethlehem)
Ornithogalum
umbellatum
(common star-of-Bethlehem)
Ornithopus
perpusillus
(Bird's-foot)
Ornithopus
spp.
Orobanche
hederae
(ivy broomrape)
Orobanche
minor
(Common Broomrape)
Orobanche
spp.
(Broomrapes)
Orthilia
secunda
(one-sided wintergreen)
Orthilia
spp.
Orthoceras
spp.
Orthoceras
strictum
(Birds mouth orchid)
Orthotrichum
anomalum
(Anomalous Bristle-moss)
Orthotrichum
diaphanum
(White-tipped Bristle-moss)
Orthotrichum
pulchellum
(Elegant Bristle-moss)
Orthotrichum
spp.
(Bristle mosses)
Osmanthus
×
burkwoodii
(Burkwood Osmanthus)
Osmanthus
decorus
(Decorus Osmanthus)
Osmanthus
delavayi
(Delavay osmanthus)
Osmanthus
×
fortunei
(Fortune's Osmanthus)
Osmanthus
fragrans
(Sweet Osmanthus)
Osmanthus
fragrans
var.
aurantiacus
(Orange-Flowered Tea Olive)
Osmanthus
heterophyllus
(holly-leaved osmanthus)
Osmanthus
heterophyllus
'Goshiki'
(Goshiki holly-leaf osmanthus)
Osmanthus
heterophyllus
'Variegatus'
(Variegated holly osmanthus)
Osmanthus
spp.
(Sweet olives)
Osmanthus
x
burkwoodii
(Burkwood osmanthus)
Osmorhiza
berteroi
(mountain sweet cicely)
Osmorhiza
claytonii
(hairy sweet cicely)
Osmorhiza
longistylis
(aniseroot)
Osmorhiza
spp.
(sweet cicely)
Osmunda
claytoniana
(interrupted fern)
Osmunda
regalis
(Royal Fern)
Osmunda
regalis
'Purpurascens'
(Purple Royal Fern)
Osmunda
spectabilis
(American Royal Fern)
Osmunda
spp.
Osmundastrum
cinnamomeum
(Cinnamon Fern)
Osmundastrum
spp.
Osmundea
pinnatifida
(Pepper Dulse)
Osmundea
spp.
Osteospermum
moniliferum
(Bietou)
Ostrya
spp.
Ostrya
virginiana
(American hophornbeam)
Oxalis
acetosella
(European wood-sorrel)
Oxalis
articulata
(pink-sorrel)
Oxalis
corniculata
(trailing yellow sorrel)
Oxalis
debilis
(Largeflower pink-sorrel)
Oxalis
dillenii
(slender yellow woodsorrel)
Oxalis
exilis
(least yellow-sorrel)
Oxalis
incarnata
(Pale pink-sorrel)
Oxalis
montana
(mountain woodsorrel)
Oxalis
oregana
(redwood sorrel)
Oxalis
perennans
(woody-root woodsorrel)
Oxalis
pes-caprae
(Bermuda buttercup)
Oxalis
purpurea
(Purple woodsorrel)
Oxalis
smalliana
(Redwood Sorrel)
Oxalis
spp.
(Woodsorrels)
Oxalis
stricta
(upright yellow woodsorrel)
Oxalis
violacea
(violet woodsorrel)
Oxybasis
rubra
(red pigweed)
Oxybasis
spp.
Oxydendrum
arboreum
(sourwood)
Oxydendrum
spp.
Oxylobium
ellipticum
(golden shaggy-pea)
Oxylobium
spp.
Oxyrrhynchium
hians
(Swartz's Feather-moss)
Oxyrrhynchium
spp.
Oxytropis
lambertii
(Lambert's Locoweed)
Oxytropis
spp.
(Locoweed)
Ozothamnus
diosmifolius
(Sago Flower)
Ozothamnus
ferrugineus
(Tree Everlasting)
Ozothamnus
obcordatus
(Grey Everlasting)
Ozothamnus
spp.
Ozothamnus
turbinatus
(Coast Everlasting)
Pachira
aquatica
(Money Tree)
Pachira
spp.
(Money Tree)
Pachyphragma
macrophyllum
(giant spring brassica)
Pachyphragma
spp.
Pachysandra
procumbens
(Allegheny Spurge)
Pachysandra
spp.
Pachysandra
terminalis
(Japanese spurge)
Pachysandra
terminalis
'Variegata'
(Variegated Japanese spurge)
Packera
anonyma
(Small's ragwort)
Packera
aurea
(golden ragwort)
Packera
glabella
(Butterweed)
Packera
obovata
(roundleaf ragwort)
Packera
spp.
(American groundsels and ragworts)
Paeonia
'Angel Cheeks'
(Angel Cheeks Peony)
Paeonia
'Best Man'
(Best Man Peony)
Paeonia
'Big Ben'
(Big Ben Peony)
Paeonia
'Bowl of Beauty'
(Bowl of Beauty Peony)
Paeonia
'Bowl of Cream'
(Bowl of Cream Peony)
Paeonia
'Buckeye Belle'
(Peony)
Paeonia
californica
(California Peony)
Paeonia
'Coral Charm'
(Coral Charm Peony)
Paeonia
'Cora Louise'
(Cora Louise Itoh Peony)
Paeonia
'Coral Sunset'
(Coral Sunset Peony)
Paeonia
'Felix Crousse'
(Felix Crousse Peony)
Paeonia
'Kansas'
(Kansas Peony)
Paeonia
'Krinkled White'
(Krinkled White Peony)
Paeonia
lactiflora
(garden peony)
Paeonia
lactiflora
'Alexander Fleming'
(Alexander Fleming Peony)
Paeonia
lactiflora
'Celebrity'
(Celebrity Peony)
Paeonia
lactiflora
'Duchesse de Nemours'
(Duchesse de Nemours Peony)
Paeonia
lactiflora
'Festiva Maxima'
(Festiva Maxima Peony)
Paeonia
lactiflora
'Gay Paree'
(Gay Paree Peony)
Paeonia
lactiflora
'Green Halo'
(Green Halo Peony)
Paeonia
lactiflora
'Jan van Leeuwen'
(Jan van Leeuwen Peony)
Paeonia
lactiflora
'Karl Rosenfeld'
(Karl Rosenfeld Peony)
Paeonia
lactiflora
'Pillow Talk'
(Pillow Talk Peony)
Paeonia
lactiflora
'Red Charm'
(Red Charm Peony)
Paeonia
lactiflora
'Sarah Bernhardt'
(Sarah Bernhardt Peony)
Paeonia
lactiflora
'Sorbet'
(Sorbet Peony)
Paeonia
lactiflora
spp.
(Bouquet Builders Peony Collection)
Paeonia
lactiflora
'Sword Dance'
(Sword Dance Peony)
Paeonia
lactiflora
'White Wings'
(Chinese Peony)
Paeonia
'Lady Alexandra Duff'
(Lady Alexandra Duff Peony)
Paeonia
ludlowii
(Ludlow's Tree Peony)
Paeonia
lutea
(Yellow Tree Peony)
Paeonia
'Madame Calot'
(Madame Calot Peony)
Paeonia
'Madame de Verneville'
(Madame de Verneville Peony)
Paeonia
'Many Happy Returns'
(Many Happy Returns Peony)
Paeonia
'Miss America'
(Miss America Peony)
Paeonia
officinalis
(common peony)
Paeonia
'Pink Hawaiian Coral'
(Pink Hawaiian Coral Peony)
Paeonia
'Santa Fe'
(Santa Fe Peony)
Paeonia
'Scarlet Heaven'
(Scarlet Heaven Itoh Peony)
Paeonia
spp.
(Peonies)
Paeonia
ssp.
(tree peony)
Paeonia
suffruticosa
(Tree Peony)
Paeonia
'Watermelon Wine'
(Watermelon Wine Itoh Peony)
Paeonia
x
'Bartzella'
(Bartzella Peony)
Palicourea
spp.
Palmaria
palmata
(Dulse)
Palmaria
spp.
Panax
spp.
Panax
trifolius
(dwarf ginseng)
Pandanus
spp.
(screwpines)
Pandanus
tectorius
(thatch screwpine)
Pandorea
jasminoides
(Bower Plant)
Pandorea
pandorana
(wonga vine)
Pandorea
spp.
Panicum
amarum
(Bitter Panicgrass)
Panicum
capillare
(witch grass)
Panicum
spp.
(panicgrasses)
Panicum
virgatum
(Switchgrass)
Papaver
atlanticum
(Atlas Poppy)
Papaver
cambricum
(welsh poppy)
Papaver
dubium
(Long-headed poppy)
Papaver
orientale
(Oriental poppy)
Papaver
pilosum
subsp.
spicatum
(Spike Poppy)
Papaver
rhoeas
(common poppy)
Papaver
rupifragum
(Spanish Poppy)
Papaver
somniferum
(opium poppy)
Papaver
spp.
(Poppies)
Parahebe
catarractae
(Speedwell Hebe)
Parahebe
perfoliata
(Koromiko)
Paraserianthes
lophantha
(Plume Albizia)
Paraserianthes
spp.
Paratrophis
pendulina
(whalebone tree)
Paratrophis
spp.
Parietaria
judaica
(pellitory-of-the-wall)
Parietaria
pensylvanica
(Pennsylvania pellitory)
Parietaria
spp.
(pellitories)
Paris
polyphylla
(multi-leaf paris)
Paris
quadrifolia
(herb paris)
Paris
spp.
Parkinsonia
aculeata
(Mexican palo verde)
Parkinsonia
florida
(blue palo verde)
Parkinsonia
microphylla
(little-leaved palo verde)
Parkinsonia
spp.
(palo verde)
Parnassia
palustris
(marsh grass-of-Parnassus)
Parnassia
spp.
Parrotia
persica
(Persian parrotia, ironwood)
Parrotia
spp.
Parsonsia
spp.
Parsonsia
straminea
(Common Silkpod)
Parthenium
hysterophorus
(Santa Maria feverfew)
Parthenium
integrifolium
(wild quinine)
Parthenium
spp.
(wild quinines)
Parthenocissus
henryana
(Henry's Virginia Creeper)
Parthenocissus
inserta
(thicket creeper)
Parthenocissus
quinquefolia
(Virginia creeper)
Parthenocissus
spp.
(Virginia Creepers)
Parthenocissus
tricuspidata
(Boston ivy)
Paspalum
dilatatum
(Dallis grass)
Paspalum
notatum
(Bahia Grass)
Paspalum
spp.
(Paspalum)
Paspalum
urvillei
(Vasey Grass)
Passerina
spp.
(Gonnas)
Passiflora
caerulea
(Blue Passion Flower)
Passiflora
edulis
(passion fruit)
Passiflora
incarnata
(purple passionflower)
Passiflora
lutea
(yellow passionflower)
Passiflora
pallida
(corkystem passionvine)
Passiflora
spp.
(Passionflowers)
Passiflora
suberosa
(corkystem passionflower)
Passiflora
subpeltata
(white passionflower)
Pastinaca
spp.
(Parsnip)
Patersonia
fragilis
(Short Purple-flag)
Patersonia
glabrata
(Leafy Purple Flag)
Patersonia
occidentalis
(Purple Flag)
Patersonia
sericea
(Silky Purple Flag)
Patersonia
spp.
Patrinia
scabiosifolia
(Golden Lace)
Patrinia
spp.
(Golden Lace)
Paulownia
spp.
(empress tree)
Paulownia
tomentosa
(empress tree)
Pauridia
spp.
Pauridia
vaginata
(yellow star)
Pavonia
hastata
(Spearleaf Swampmallow)
Pavonia
lasiopetala
(Rose pavonia)
Pavonia
spp.
(Swampmallows)
Paxistima
myrsinites
(Oregon Box)
Paxistima
spp.
Pedicularis
canadensis
(Canadian lousewort)
Pedicularis
densiflora
(Warrior's Plume)
Pedicularis
groenlandica
(Elephant's-Head lousewort)
Pedicularis
palustris
(Marsh Lousewort)
Pedicularis
racemosa
(Sickletop Lousewort)
Pedicularis
spp.
(Louseworts)
Pedicularis
sylvatica
(Common Lousewort)
Pediocactus
simpsonii
(Mountain Ball Cactus)
Pediocactus
spp.
Pediomelum
spp.
Pediomelum
tenuiflorum
(Slimflower Scurfpea)
Pelargonium
australe
(Austral Stork's-bill)
Pelargonium
capitatum
(rose-scented geranium)
Pelargonium
citrosum
(Citronella Geranium)
Pelargonium
×
domesticum
(regal pelargonium)
Pelargonium
×
hybridum
(garden geranium)
Pelargonium
rodneyanum
(magenta stork's-bill)
Pelazoneuron
kunthii
(Widespread Maiden Fern)
Pelazoneuron
spp.
Pellaea
andromedifolia
(Coffee Fern)
Pellaea
atropurpurea
(purple-stem cliffbrake)
Pellaea
falcata
(Sickle Fern)
Pellaea
mucronata
(bird's foot cliffbrake)
Pellaea
rotundifolia
(Button Fern)
Pellaea
spp.
Pellia
epiphylla
(common pellia)
Pellia
spp.
(Pellia)
Peltandra
spp.
Peltandra
virginica
(Green Arrow Arum)
Pennisetum
alopecuroides
(Fountain Grass)
Pennisetum
orientale
(Oriental Fountain Grass)
Pennisetum
setaceum
(Fountain Grass)
Pennisetum
setaceum
'Rubrum'
(Purple Fountain Grass)
Pennisetum
spp.
(Fountain Grass)
Penstemon
barrettiae
(Barrett's Penstemon)
Penstemon
campanulatus
(Bellflower Penstemon)
Penstemon
cardwellii
(Cardwell's Penstemon)
Penstemon
centranthifolius
(scarlet bugler)
Penstemon
cobaea
(cobaea beardtongue)
Penstemon
davidsonii
(Davidson's Penstemon)
Penstemon
digitalis
(foxglove beardtongue)
Penstemon
digitalis
'Husker Red'
(Husker Red Penstemon)
Penstemon
eatonii
(Firecracker Penstemon)
Penstemon
fruticosus
(Shrubby Penstemon)
Penstemon
heterophyllus
(Bunchleaf Penstemon)
Penstemon
Hybrids
(Beard Tongue)
Penstemon
newberryi
(Mountain Pride)
Penstemon
ovatus
(Broad-leafed Penstemon)
Penstemon
pallidus
(Pale Beardtongue)
Penstemon
palmeri
(Palmer's penstemon)
Penstemon
pinifolius
(Pine Penstemon)
Penstemon
procerus
(Small-flowered Penstemon)
Penstemon
pruinosus
(Chelan Penstemon)
Penstemon
rattanii
(Rattan's Penstemon)
Penstemon
'Raven'
(Raven Penstemon)
Penstemon
richardsonii
(Richardson's Penstemon)
Penstemon
serrulatus
(Coast Penstemon)
Penstemon
smallii
(Smalls Beardtongue)
Penstemon
spectabilis
(Showy Penstemon)
Penstemon
spp.
(beardtongues)
Penstemon
strictus
(Rocky Mt Penstemon)
Penstemon
venustus
(Blue Mt Penstemon)
Penstemon
virens
(Front Range Beardtongue)
Penstemon
whippleanus
(Whipple's penstemon)
Pentaglottis
sempervirens
(Green Alkanet)
Pentaglottis
spp.
Pentagramma
spp.
Pentagramma
triangularis
(goldback fern)
Pentanema
spp.
Pentanema
squarrosum
(Ploughman's-spikenard)
Pentas
lanceolata
(Egyptian Star-cluster)
Pentas
spp.
(Star Clusters)
Penthorum
sedoides
(ditch stonecrop)
Penthorum
spp.
Peperomia
argyreia
(Watermelon Peperomia)
Peperomia
caperata
'Rosso'
(Rosso Peperomia)
Peperomia
leptostachya
(Slender Peperomia)
Peperomia
obtusifolia
(Baby Rubber Plant)
Peperomia
prostrata
(String of Turtles)
Peperomia
spp.
(radiator plants)
Pericallis
×
hybrida
(Florist's cineraria)
Pericallis
spp.
Perilla
frutescens
(beefsteak plant)
Perilla
spp.
Perityle
emoryi
(Emory's rockdaisy)
Perityle
spp.
Perovskia
atriplicifolia
'Lacey Blue'
(Lacey Blue Russian Sage)
Perovskia
atriplicifolia
'Little Spire'
(Little Spire Russian Sage)
Perovskia
'Filigran'
(Filigran Russian Sage)
Perovskia
'Longin'
(Longin Russian Sage)
Perovskia
spp.
Persea
spp.
(Avocados and bays)
Persicaria
amphibia
(water smartweed)
Persicaria
amplexicaulis
'Firetail'
(Red knotweed)
Persicaria
decipiens
(slender knotweed)
Persicaria
hydropiper
(waterpepper)
Persicaria
hydropiperoides
(swamp smartweed)
Persicaria
lapathifolia
(dock-leaved smartweed)
Persicaria
longiseta
(low smartweed)
Persicaria
maculosa
(lady's thumb)
Persicaria
microcephala
'Red Dragon'
(Red Dragon Knotweed)
Persicaria
pensylvanica
(pinkweed)
Persicaria
perfoliata
(mile-a-minute weed)
Persicaria
polymorpha
(Giant Fleece Flower)
Persicaria
punctata
(Dotted Smartweed)
Persicaria
sagittata
(arrow-leaved tearthumb)
Persicaria
spp.
(knotweeds, smartweeds, and waterpeppers)
Persicaria
virginiana
(Jumpseed)
Persoonia
juniperina
(Prickly Geebung)
Persoonia
lanceolata
(Lance-leaf Geebung)
Persoonia
levis
(Broad-leaf Geebung)
Persoonia
linearis
(Narrow-leaf Geebung)
Persoonia
pinifolia
(Pine-leaf Geebung)
Persoonia
spp.
Persoonia
virgata
(small-leaved geebung)
Petalostigma
pubescens
(quinine bush)
Petalostigma
spp.
Petasites
albus
(White Butterbur)
Petasites
frigidus
(coltsfoot)
Petasites
hybridus
(Common Butterbur)
Petasites
japonicus
(fuki,butterburr)
Petasites
pyrenaicus
(Winter Heliotrope)
Petasites
spp.
(Butterburs)
Petrophile
pulchella
(Conesticks)
Petrophile
spp.
Petrosedum
rupestre
(Reflexed Stonecrop)
Petrosedum
spp.
(Stonecrops)
Petroselinum
spp.
(Parsley)
Petunia
×
atkinsiana
(garden petunia)
Peucedanum
officinale
(Hog's Fennel)
Peucedanum
spp.
Peucedanum
verticillare
(Giant Hog Fennel)
Phacelia
bipinnatifida
(Purple Phacelia)
Phacelia
californica
(California phacelia)
Phacelia
campanularia
(desert bluebells)
Phacelia
cicutaria
(caterpillar scorpionweed)
Phacelia
congesta
(Blue Curls)
Phacelia
crenulata
(Notch-leaf Scorpionweed)
Phacelia
distans
(distant phacelia)
Phacelia
hastata
(Silverleaf phacelia)
Phacelia
imbricata
(Mountain Phacelia)
Phacelia
minor
(wild canterbury bells)
Phacelia
nemoralis
(Shade Phacelia)
Phacelia
parryi
(Parry's phacelia)
Phacelia
purshii
(Miami Mist)
Phacelia
ramosissima
(branching phacelia)
Phacelia
sericea
(Silky Phacelia)
Phacelia
spp.
(Scorpionweeds)
Phacelia
tanacetifolia
(Lacy phacelia)
Phalaenopsis
spp.
(Moth Orchid)
Phalaris
aquatica
(harding grass)
Phalaris
arundinacea
(reed canary grass)
Phalaris
spp.
(Canarygrasses)
Phaseolus
spp.
(beans)
Phaseolus
vulgaris
'Blue Lake'
(Blue Lake Green Bean)
Phaseolus
vulgaris
'Dragon Tongue'
(Dragon Tongue Bean)
Phaseolus
vulgaris
'Kentucky Wonder'
(Kentucky Wonder Bean)
Phaseolus
vulgaris
'Provider'
(Provider Bush Bean)
Phaseolus
vulgaris
'Purple Queen'
(Purple Queen Bean)
Phaseolus
vulgaris
'Roma II'
(Roma II Bush Bean)
Phebalium
spp.
Phebalium
squamulosum
(scaly phebalium)
Phedimus
kamtschaticus
(Orange Stonecrop)
Phedimus
selskianus
(Selsky Stonecrop)
Phedimus
spp.
(False Stonecrops)
Phegopteris
connectilis
(long beech fern)
Phegopteris
decursive-pinnata
(Japanese Beech Fern)
Phegopteris
hexagonoptera
(broad beech fern)
Phegopteris
spp.
Pheladenia
deformis
(Blue Fairy Orchid)
Pheladenia
spp.
Phelipanche
spp.
(Broomrape)
Phellodendron
spp.
(Cork Tree)
Philadelphus
(mock oranges)
Philadelphus
coronarius
'Aureus'
(Golden Mock Orange)
Philadelphus
lewisii
(Lewis' Mock Orange)
Philadelphus
microphyllus
(Littleleaf Mock Orange)
Philadelphus
'Snowbelle'
(Snowbelle Mock Orange)
Philadelphus
spp.
(mock orange)
Philodendron
erubescens
'Pink Princess'
(Pink Princess Philodendron)
Philodendron
gloriosum
(Glorious Philodendron)
Philodendron
hastatum
(Silver Sword Philodendron)
Philodendron
hederaceum
(Heartleaf Philodendron)
Philodendron
'Moonlight'
(Moonlight Philodendron)
Philodendron
'Prince of Orange'
(Prince of Orange Philodendron)
Philodendron
'Rojo Congo'
(Rojo Congo Philodendron)
Philodendron
rugosum
(Philodendron Pig Skin)
Philodendron
spp.
(philodendrons)
Philydrum
lanuginosum
(woolly frog's-mouth)
Philydrum
spp.
Phlebodium
aureum
(Blue Star Fern)
Phlebodium
spp.
(Golden Polypody)
Phleum
pratense
(Timothy grass)
Phleum
spp.
(Timothies)
Phlomis
fruticosa
(Jerusalem Sage)
Phlomis
italica
(Balearic Island Sage)
Phlomis
russeliana
(Jerusalem sage)
Phlomis
spp.
(Lampwicks)
Phlox
diffusa
(spreading phlox)
Phlox
divaricata
(Woodland Phlox)
Phlox
divaricata
'Blue Moon'
(Blue Moon Woodland Phlox)
Phlox
divaricata
'May Breeze'
(May Breeze Woodland Phlox)
Phlox
drummondii
(Drummond's phlox)
Phlox
hoodii
(spiny phlox)
Phlox
longifolia
(Longleaf Phlox)
Phlox
paniculata
(Garden Phlox)
Phlox
paniculata
'Blue Paradise'
(Garden Phlox)
Phlox
paniculata
spp.
(Tall Phlox Mix)
Phlox
pilosa
(prairie phlox)
Phlox
spp.
(phloxes)
Phlox
subulata
'Amazing Grace'
(Amazing Grace Creeping Phlox)
Phlox
subulata
'Candy Stripe'
(Candy Stripe Creeping Phlox)
Phlox
subulata
'Emerald Blue'
(Emerald Blue Creeping Phlox)
Phlox
subulata
'Emerald Pink'
(Emerald Pink Creeping Phlox)
Phlox
subulata
'Fort Hill'
(Fort Hill Creeping Phlox)
Phlox
subulata
'Purple Beauty'
(Purple Beauty Creeping Phlox)
Phlox
subulata
'Scarlet Flame'
(Scarlet Flame Carpet Phlox)
Phlox
subulata
'Snowflake'
(Snowflake Creeping Phlox)
Phoenix
canariensis
(Canary Island palm)
Phoenix
roebelenii
(Pygmy Date Palm)
Phoenix
spp.
(date palms)
Phoenix
sylvestris
(Silver Date Palm)
Pholistoma
auritum
(Fiesta Flower)
Pholistoma
spp.
Phoradendron
californicum
(Mesquite Mistletoe)
Phoradendron
leucarpum
(American Mistletoe)
Phoradendron
spp.
(leafy mistletoes)
Phormium
spp.
(New Zealand flaxes)
Phormium
tenax
(New Zealand flax)
Photinia
davidiana
(tall stranvaesia)
Photinia
×
fraseri
(Red Tip Photinia)
Photinia
serratifolia
(Chinese Photinia)
Photinia
spp.
(Christmas berries)
Photinia
x
fraseri
(Red tip photinia)
Phragmites
australis
(common reed)
Phragmites
spp.
(Reeds)
Phryma
leptostachya
(American lopseed)
Phryma
spp.
Phygelius
spp.
Phygelius
x
rectus
(Cape Fuchsia)
Phygelius
x
rectus
Hybrids
(cape fuchsia)
Phyla
lanceolata
(lanceleaf frogfruit)
Phyla
nodiflora
(turkey tangle frogfruit)
Phyla
spp.
(frogfruits)
Phylica
spp.
(Hardleaves)
Phyllanthus
calycinus
(False Boronia)
Phyllanthus
hirtellus
(Thyme Spurge)
Phyllanthus
spp.
(leaf-flowers)
Phyllanthus
urinaria
(Chamberbitter)
Phyllodoce
empetriformis
(pink mountainheath)
Phyllodoce
spp.
Phyllospadix
spp.
(surfgrasses)
Phyllospadix
torreyi
(Torrey's Surfgrass)
Phyllostachys
aurea
(golden bamboo)
Phyllostachys
nigra
(black bamboo)
Phyllostachys
spp.
(Running Bamboo)
Phyllota
phylicoides
(Common Phyllota)
Phyllota
pleurandroides
(Heathy Phyllota)
Phyllota
spp.
Physalis
angulata
(cutleaf groundcherry)
Physalis
crassifolia
(Thickleaf Groundcherry)
Physalis
×
elliottii
(Elliott's groundcherry)
Physalis
heterophylla
(clammy groundcherry)
Physalis
longifolia
(long-leaved groundcherry)
Physalis
spp.
(groundcherries)
Physaria
spp.
(bladderpods)
Physocarpus
capitatus
(Pacific ninebark)
Physocarpus
opulifolius
'Diabolo'
(Diabolo Ninebark)
Physocarpus
opulifolius
'Monlo'
(Diabolo® ninebark)
Physocarpus
opulifolius
'Seward'
(Summer Wine Ninebark)
Physocarpus
spp.
(ninebarks)
Physostegia
spp.
(dragonheads and obedient plants)
Physostegia
virginiana
(Obedient Plant)
Phyteuma
scheuchzeri
(Oxford Rampion)
Phyteuma
spp.
Phytolacca
americana
(American pokeweed)
Phytolacca
octandra
(Inkweed)
Phytolacca
spp.
(Pokeweeds)
Picea
abies
(Norway Spruce)
Picea
abies
'Little Gem'
(Little Gem Norway Spruce)
Picea
abies
'Nidiformis'
(bird's nest spruce)
Picea
abies
'Pendula'
(Weeping Norway Spruce)
Picea
abies
'Pusch'
(Pusch Norway Spruce)
Picea
abies
'Reflexa'
(weeping Norway spruce)
Picea
×
albertiana
(Interior Spruce)
Picea
engelmannii
(Engelmann spruce)
Picea
glauca
(white spruce)
Picea
glauca
'Conica'
(Dwarf Alberta Spruce)
Picea
glauca
'Pendula'
(Weeping White Spruce)
Picea
mariana
(black spruce)
Picea
meyeri
(Meyer Spruce)
Picea
omorika
(Serbian Spruce)
Picea
orientalis
(Oriental spruce)
Picea
orientalis
'Aurea'
(Golden Oriental Spruce)
Picea
orientalis
'Aureospicata'
(Golden Oriental Spruce)
Picea
pungens
(Colorado Spruce)
Picea
pungens
'Glauca'
(Colorado Blue Spruce)
Picea
pungens
'Montgomery'
(Montgomery Blue Spruce)
Picea
rubens
(red spruce)
Picea
sitchensis
(Sitka Spruce)
Picea
spp.
(spruces)
Picris
hieracioides
(Hawkweed Oxtongue)
Picris
spp.
Pieris
'Brouwer'
s
Beauty'
(Brouwer's Beauty Pieris)
Pieris
floribunda
(Mountain andromeda)
Pieris
japonica
(Japanese andromeda)
Pieris
japonica
'Cavatine'
(Cavatine Japanese Pieris)
Pieris
japonica
'Dorothy Wyckoff'
(Dorothy Wyckoff Pieris)
Pieris
japonica
'Flamingo'
(Flamingo Japanese Pieris)
Pieris
japonica
'Flaming Silver'
(Flaming Silver Pieris)
Pieris
japonica
'Forest Flame'
(Japanese andromeda)
Pieris
japonica
'Little Heath'
(Little Heath Pieris)
Pieris
japonica
'Mountain Fire'
(Pieris Mountain Fire)
Pieris
japonica
'Nocturne'
(Nocturne Japanese Pieris)
Pieris
japonica
'Sarabande'
(Sarabande Japanese Pieris)
Pieris
japonica
'Valley Rose'
(Valley Rose Pieris)
Pieris
japonica
'Valley Valentine'
(Valley Valentine Pieris)
Pieris
japonica
'Variegata'
(Variegated Japanese Pieris)
Pieris
spp.
(Andromedas)
Pigea
monopetala
(Lady's Slipper)
Pigea
spp.
Pigea
stellarioides
(spade flower)
Pilea
matsudae
Pilea
microphylla
(Artillery Plant)
Pilea
peperomioides
(Pilea Peperomioides)
Pilea
pumila
(Canada clearweed)
Pilea
spp.
(Clearweeds)
Pileostegia
viburnoides
(Climbing Hydrangea Vine)
Pilosella
aurantiaca
(orange hawkweed)
Pilosella
caespitosa
(meadow hawkweed)
Pilosella
officinarum
(mouse-eared hawkweed)
Pilosella
spp.
(mouse-ear hawkweeds)
Pimelea
curviflora
(curved rice-flower)
Pimelea
glauca
(smooth riceflower)
Pimelea
humilis
(Common Rice-flower)
Pimelea
linifolia
(Queen of the Bush)
Pimelea
octophylla
(Woolly Rice-flower)
Pimelea
prostrata
(Strand Pimelea)
Pimelea
spp.
(riceflowers)
Pimpinella
saxifraga
(Burnet-saxifrage)
Pimpinella
spp.
Pinguicula
spp.
Pinguicula
vulgaris
(Common Butterwort)
Pinus
albicaulis
(Whitebark Pine)
Pinus
aristata
(Bristlecone Pine)
Pinus
arizonica
(Arizona Pine)
Pinus
armandii
(Armand Pine)
Pinus
attenuata
(Knobcone Pine)
Pinus
banksiana
(Jack Pine)
Pinus
brachyptera
(Southwestern Ponderosa Pine)
Pinus
bungeana
(Lacebark Pine)
Pinus
cembra
(Swiss stone pine)
Pinus
clausa
(sand pine)
Pinus
contorta
(Lodgepole Pine)
Pinus
contorta
'Taylor'
s
Sunburst'
(Taylor's Sunburst Lodgepole Pine)
Pinus
contorta
var.
contorta
(Shore Pine)
Pinus
contorta
var.
latifolia
(Lodgepole Pine)
Pinus
coulteri
(Coulter Pine)
Pinus
densiflora
(Japanese Red Pine)
Pinus
densiflora
'Umbraculifera'
(Japanese Umbrella Pine)
Pinus
echinata
(shortleaf pine)
Pinus
edulis
(Colorado Pinyon)
Pinus
elliottii
(slash pine)
Pinus
flexilis
(limber pine)
Pinus
heldreichii
(Bosnian Pine)
Pinus
jeffreyi
(Jeffrey Pine)
Pinus
×
kohae
(Arizona Singleleaf Pinyon)
Pinus
koraiensis
(Korean Pine)
Pinus
lambertiana
(Sugar Pine)
Pinus
longaeva
(Great Basin bristlecone pine)
Pinus
monophylla
(singleleaf pinyon)
Pinus
montezumae
(Montezuma Pine)
Pinus
monticola
(Western White Pine)
Pinus
mugo
(mugo pine)
Pinus
mugo
'Slowmound'
(Dwarf Mugo Pine)
Pinus
muricata
(Bishop Pine)
Pinus
nigra
(Austrian Pine)
Pinus
palustris
(longleaf pine)
Pinus
parviflora
(Japanese White Pine)
Pinus
parviflora
'Glauca'
(Blue Japanese White Pine)
Pinus
pinaster
(Maritime Pine)
Pinus
pinea
(Italian Stone Pine)
Pinus
ponderosa
(Ponderosa Pine)
Pinus
pumila
(Dwarf Siberian Pine)
Pinus
radiata
(Monterey Pine)
Pinus
resinosa
(Red Pine)
Pinus
rigida
(Pitch Pine)
Pinus
sabiniana
(Digger Pine)
Pinus
scopulorum
(Rocky Mountains Ponderosa Pine)
Pinus
spp.
(pines)
Pinus
strobus
(eastern white pine)
Pinus
strobus
'Nana'
(Dwarf White Pine)
Pinus
sylvestris
(Scots Pine)
Pinus
sylvestris
'Fastigiata'
(Columnar Scots Pine)
Pinus
sylvestris
'Watereri'
(Waterer Scots Pine)
Pinus
taeda
(Loblolly Pine)
Pinus
thunbergii
(Japanese Black Pine)
Pinus
thunbergii
'Thunderhead'
(Thunderhead Japanese black pine)
Pinus
torreyana
(Torrey pine)
Pinus
virginiana
(Virginia Pine)
Pinus
wallichiana
(Himalayan Pine)
Pinus
yunnanensis
(Yunnan Pine)
Piper
hederaceum
(Australian Pepper Vine)
Piper
nigrum
(Black Pepper Plant)
Piper
spp.
(pepper plants)
Pistacia
chinensis
(Chinese pistache)
Pistacia
lentiscus
(mastic)
Pistacia
spp.
(pistaches)
Pistia
spp.
Pistia
stratiotes
(Water Lettuce)
Pisum
spp.
(Garden Pea)
Pithecellobium
spp.
(Blackbeads)
Pittosporum
angustifolium
(Native apricot)
Pittosporum
bicolor
(Banyalla)
Pittosporum
multiflorum
(orange thorn)
Pittosporum
revolutum
(Rough-fruited Pittosporum)
Pittosporum
spp.
(Cheesewoods)
Pittosporum
tenuifolium
(pittosporum tenuifolium)
Pittosporum
tobira
(Japanese pittosporum)
Pittosporum
undulatum
(Australian Cheesewood)
Pityopsis
spp.
(Silkgrasses)
Plagiobothrys
nothofulvus
(Rusty Popcornflower)
Plagiobothrys
spp.
(Popcornflowers)
Plagiochila
spp.
(Plagiochila liverworts)
Plagiomnium
cuspidatum
(Woodsy Thyme-moss)
Plagiomnium
spp.
(Thyme and Allied Mosses)
Plagiomnium
undulatum
(Palm-tree Moss)
Plagiothecium
spp.
Plagiothecium
undulatum
(Waved Silk-moss)
Plantago
aristata
(bracted plantain)
Plantago
coronopus
(Buck's-horn Plantain)
Plantago
erecta
(dot-seed plantain)
Plantago
lanceolata
(English plantain)
Plantago
major
(common plantain)
Plantago
maritima
(Sea Plantain)
Plantago
media
(Hoary Plantain)
Plantago
patagonica
(Woolly Plantain)
Plantago
rhodosperma
(redseed plantain)
Plantago
rugelii
(American plantain)
Plantago
spp.
(plantains)
Plantago
virginica
(dwarf plantain)
Platanthera
chlorantha
(Greater butterfly-orchid)
Platanthera
dilatata
(white bog orchid)
Platanthera
spp.
(Bog Orchids)
Platanus
×
acerifolia
(London plane tree)
Platanus
×
hispanica
(London Plane)
Platanus
occidentalis
(American Sycamore)
Platanus
orientalis
(Oriental Plane)
Platanus
racemosa
(California Sycamore)
Platanus
spp.
(planes)
Platanus
wrightii
(Arizona sycamore)
Platycerium
bifurcatum
(Staghorn Fern)
Platycerium
spp.
(staghorn ferns)
Platycerium
superbum
(Stag Horn Fern)
Platycladus
orientalis
(Oriental Arborvitae)
Platycladus
orientalis
'Aurea Nana'
(Berckmans Gold Arborvitae)
Platycladus
spp.
(Oriental arborvitae)
Platycodon
spp.
(Balloon Flower)
Platylobium
formosum
(Handsome Flat Pea)
Platylobium
obtusangulum
(Common Flat-pea)
Platylobium
spp.
Platysace
lanceolata
(Shrubby Platysace)
Platysace
linearifolia
(Carrot Tops)
Platysace
spp.
Platystemon
californicus
(creamcups)
Platystemon
spp.
Plectocephalus
americanus
(American basketflower)
Plectocephalus
spp.
Plectranthus
spp.
(spurflowers)
Plectritis
congesta
(shortspur seablush)
Plectritis
spp.
Pleioblastus
pygmaeus
(dwarf bamboo)
Pleioblastus
spp.
Plenogemma
phyllantha
(Frizzled Pincushion)
Plenogemma
spp.
Pleopeltis
michauxiana
(resurrection fern)
Pleopeltis
spp.
(Shielded ferns)
Pleroma
spp.
(glory bushes and allies)
Pleurothallis
spp.
Pleurozium
schreberi
(Red-stemmed Feather Moss)
Pleurozium
spp.
Pluchea
baccharis
(Rosy Camphorweed)
Pluchea
camphorata
(Camphor-weed)
Pluchea
odorata
(marsh fleabane)
Pluchea
sericea
(arrowweed)
Pluchea
spp.
(marsh fleabanes)
Plumbago
spp.
(plumbagos)
Plumeria
rubra
(Plumeria)
Plumeria
spp.
(Frangipani Trees)
Poa
annua
(annual bluegrass)
Poa
bulbosa
(Bulbous Bluegrass)
Poa
labillardierei
(common tussock grass)
Poa
pratensis
(Kentucky Bluegrass)
Poa
spp.
(Meadow-grasses)
Poa
trivialis
(Rough Meadow-grass)
Podocarpus
elatus
(Plum Pine)
Podocarpus
lawrencei
(Mountain Plum Pine)
Podocarpus
macrophyllus
(Buddhist pine)
Podocarpus
nivalis
(Snow Totara)
Podocarpus
spp.
(plum pines)
Podolobium
ilicifolium
(Prickly Shaggy Pea)
Podolobium
spp.
Podophyllum
peltatum
(mayapple)
Podophyllum
pleianthum
(Chinese mayapple)
Podophyllum
'Spotty Dotty'
(Spotty Dotty mayapple)
Podophyllum
spp.
Podosphaera
spp.
Podosphaera
xanthii
(Cucurbit Powdery Mildew)
Pogonia
ophioglossoides
(Rose Pogonia)
Pogonia
spp.
Polanisia
dodecandra
(redwhisker clammyweed)
Polanisia
spp.
Polemonium
boreale
(Northern Jacob's Ladder)
Polemonium
caeruleum
'Snow and Sapphires'
(Snow and Sapphires Jacob's Ladder)
Polemonium
carneum
(Salmon Jacob's Ladder)
Polemonium
reptans
(Jacob's ladder)
Polemonium
spp.
(Jacob's ladders)
Polycarpon
spp.
Polycarpon
tetraphyllum
(fourleaf manyseed)
Polygala
myrtifolia
(Sweet Pea Shrub)
Polygala
serpyllifolia
(Heath Milkwort)
Polygala
spp.
(Milkworts)
Polygala
vulgaris
(Common Milkwort)
Polygaloides
paucifolia
(fringed polygala)
Polygaloides
spp.
Polygonatum
(Solomon's seal)
Polygonatum
biflorum
(Solomons Seal)
Polygonatum
multiflorum
(Solomon's-seal)
Polygonatum
odoratum
(Solomon's Seal)
Polygonatum
odoratum
'Variegatum'
(Variegated Solomon's Seal)
Polygonatum
pubescens
(hairy Solomon's-seal)
Polygonatum
verticillatum
(Whorled Solomon's Seal)
Polygonatum
x
hybridum
(Solomon's Seal)
Polygonum
arenastrum
(Oval Leaf Knotweed)
Polygonum
aviculare
(common knotweed)
Polygonum
spp.
(knotweeds)
Polylepis
spp.
(queñua and allies)
Polymeria
calycina
(slender bindweed)
Polymeria
spp.
Polymnia
canadensis
(leafcup)
Polymnia
spp.
Polypodium
californicum
(California Polypody)
Polypodium
glycyrrhiza
(licorice fern)
Polypodium
interjectum
(intermediate polypody)
Polypodium
scouleri
(Scouler's Polypody)
Polypodium
spp.
(polypody ferns)
Polypodium
virginianum
(rock polypody)
Polypodium
vulgare
(common polypody)
Polypogon
monspeliensis
(rabbitfoot grass)
Polypogon
spp.
(Beard grasses)
Polypogon
viridis
(water beard grass)
Polypremum
procumbens
(Rust Weed)
Polypremum
spp.
Polyscias
elegans
(celery wood)
Polyscias
sambucifolia
(Elderberry Panax)
Polyscias
spp.
(aralias)
Polystichum
acrostichoides
(Christmas Fern)
Polystichum
aculeatum
(hard shield fern)
Polystichum
makinoi
(Makino's Holly Fern)
Polystichum
munitum
(Western sword fern)
Polystichum
neolobatum
(Asian Sword Fern)
Polystichum
polyblepharum
(Korean tassel fern)
Polystichum
proliferum
(mother shield-fern)
Polystichum
setiferum
(soft shield fern)
Polystichum
setiferum
'Herrenhausen'
(Soft Shield Fern)
Polystichum
spp.
(shield ferns)
Polystichum
tsus-simense
(Korean Rock Fern)
Polytaenia
spp.
Polytaenia
texana
(Texas Prairie Parsley)
Polytrichum
commune
(Common Haircap Moss)
Polytrichum
formosum
(Bank Haircap Moss)
Polytrichum
juniperinum
(juniper haircap moss)
Polytrichum
piliferum
(bristly haircap moss)
Polytrichum
spp.
(haircap mosses)
Pomaderris
apetala
(Tainui)
Pomaderris
aspera
(Hazel Pomaderris)
Pomaderris
spp.
(Pomaderris)
Pomax
spp.
Pomax
umbellata
(pomax)
Pontederia
cordata
(pickerelweed)
Pontederia
crassipes
(common water hyacinth)
Pontederia
spp.
(Pickerel Weeds)
Populus
×
acuminata
(lanceleaf cottonwood)
Populus
alba
(white poplar)
Populus
angustifolia
(Narrowleaf Cottonwood)
Populus
balsamifera
ssp.
trichocarpa
(black cottonwood)
Populus
deltoides
(Eastern Cottonwood)
Populus
fremontii
(Frémont Cottonwood)
Populus
grandidentata
(bigtooth aspen)
Populus
nigra
'Italica'
(Lombardy poplar)
Populus
×
rouleauana
(Rouleau's Poplar)
Populus
spp.
(poplars, cottonwoods, and aspens)
Populus
tremula
(European aspen)
Populus
tremuloides
(quaking aspen)
Populus
trichocarpa
(cottonwood)
Poranthera
microphylla
(Small Poranthera)
Poranthera
spp.
Porella
spp.
(Porella liverworts)
Portulaca
oleracea
(purslane)
Portulaca
pilosa
(shaggy portulaca)
Portulacaria
afra
(Jade Plant)
Portulacaria
spp.
(Spekbooms)
Portulaca
spp.
(purslanes)
Posidonia
australis
(fibre-ball weed)
Posidonia
spp.
Potamogeton
natans
(floating-leaved pondweed)
Potamogeton
polygonifolius
(Bog Pondweed)
Potamogeton
spp.
(Pondweeds)
Potentilla
anglica
(English cinquefoil)
Potentilla
anserina
(Pacific Silverweed)
Potentilla
argentea
(Silvery Cinquefoil)
Potentilla
atrosanguinea
(red cinquefoil)
Potentilla
canadensis
(dwarf cinquefoil)
Potentilla
erecta
(Tormentil)
Potentilla
fruticosa
(Shrubby Cinquefoil)
Potentilla
gelida
(silvery cinquefoil)
Potentilla
gracilis
(Slender Cinquefoil)
Potentilla
indica
(mock strawberry)
Potentilla
nepalensis
'Miss Willmott'
(Nepal Cinquefoil)
Potentilla
norvegica
(rough cinquefoil)
Potentilla
palustris
(Marsh Cinquefoil)
Potentilla
recta
(sulfur cinquefoil)
Potentilla
recta
var.
sulphurea
(Sulphur Cinquefoil)
Potentilla
reptans
(Creeping cinquefoil)
Potentilla
simplex
(common cinquefoil)
Potentilla
spp.
(cinquefoils)
Potentilla
sterilis
(Barren Strawberry)
Pothos
longipes
(candle vine)
Pothos
spp.
Prasophyllum
elatum
(Tall Leek Orchid)
Prasophyllum
spp.
Pratia
pedunculata
(Blue Star Creeper)
Pratia
spp.
Praxelis
clematidea
(pussyfoot)
Praxelis
spp.
Primula
(polyanthus)
Primula
acaulis
(stemless primrose)
Primula
auricula
(Auricula Primrose)
Primula
beesiana
(Bee's Primrose)
Primula
bulleyana
(Bulley's Primrose)
Primula
clevelandii
(Padre's Shooting Star)
Primula
florindae
(Giant Cowslip)
Primula
hendersonii
(Henderson's shooting star)
Primula
japonica
(Japanese Primrose)
Primula
kisoana
(Kisan primrose)
Primula
meadia
(eastern shooting star)
Primula
pauciflora
(dark-throated shooting star)
Primula
poissonii
(Poisson's Primrose)
Primula
pulverulenta
(Candelabra Primrose)
Primula
sieboldii
(sakura)
Primula
veris
(Cowslip)
Primula
vulgaris
(Common Primrose)
Prosartes
hookeri
(Hooker's Fairy Bells)
Prosartes
smithii
(Largeflower Fairybells)
Prosartes
spp.
(American fairybells)
Prostanthera
cuneata
(alpine mint bush)
Prostanthera
lasianthos
(Christmas Bush)
Prostanthera
spp.
Protea
×
hybrida
(Sugarbush Hybrids)
Protea
spp.
Prunella
spp.
(selfheals)
Prunella
vulgaris
(self heal)
Prunus
americana
(American plum)
Prunus
angustifolia
(Chickasaw plum)
Prunus
armeniaca
'Moorpark'
(Moorpark Apricot)
Prunus
avium
'Rainier'
(Rainier Cherry)
Prunus
caroliniana
(Carolina laurelcherry)
Prunus
cerasifera
(purple leaf plum, cherry plum)
Prunus
cerasifera
'Thundercloud'
(Thundercloud Plum)
Prunus
cerasus
'Montmorency'
(Montmorency Cherry)
Prunus
cerasus
'North Star'
(North Star Cherry)
Prunus
×
cistena
(Purple-leaved Sand Cherry)
Prunus
domestica
(European plum)
Prunus
emarginata
(Bitter Cherry)
Prunus
ilicifolia
(hollyleaf cherry)
Prunus
insititia
(Damson)
Prunus
'Kanzan'
(Kwanzan flowering cherry)
Prunus
laurocerasus
(English laurel)
Prunus
laurocerasus
'Mt. Vernon'
(Mt. Vernon laurel)
Prunus
laurocerasus
'Otto Luyken'
(Otto Luyken Laurel)
Prunus
laurocerasus
'Schipkaensis'
(Skip Laurel)
Prunus
laurocerasus
'Zabeliana'
(Zabel laurel)
Prunus
lusitanica
(Portuguese laurel)
Prunus
maritima
(Beach Plum)
Prunus
mexicana
(Mexican Plum)
Prunus
padus
(bird cherry)
Prunus
pensylvanica
(fire cherry)
Prunus
salicina
'Satsuma'
(Satsuma Plum)
Prunus
serotina
(Black Cherry)
Prunus
serrulata
((in the Sato-Zakura group))
Prunus
'Shirotae'
(Mt. Fuji flowering cherry)
Prunus
spinosa
(Blackthorn)
Prunus
spp.
(plums, cherries, and allies)
Prunus
subhirtella
'Autumnalis'
(Autumn Cherry Tree)
Prunus
subhirtella
'Pendula'
(weeping flowering cherry)
Prunus
subhirtella
'Pendula Plena Rosea'
(Double Pink Weeping Cherry Tree)
Prunus
virginiana
(Chokecherry)
Prunus
×
yedoensis
(Yoshino flowering cherry)
Prunus
×
yedoensis
'Akebono'
(Akebono Cherry)
Psephellus
spp.
(Knapweed)
Pseudanomodon
attenuatus
(tree-skirt moss)
Pseudanomodon
spp.
Pseuderanthemum
spp.
(False eranthemums)
Pseuderanthemum
variabile
(Pastel Flower)
Pseudisothecium
myosuroides
(Mouse-tail Moss)
Pseudisothecium
spp.
Pseudisothecium
stoloniferum
(Cat's Tail Moss)
Pseudodictamnus
mediterraneus
(False Dittany)
Pseudodictamnus
spp.
Pseudofumaria
lutea
(Yellow Fumitory)
Pseudofumaria
spp.
Pseudognaphalium
biolettii
(two-color rabbit tobacco)
Pseudognaphalium
californicum
(California cudweed)
Pseudognaphalium
luteoalbum
(Jersey Cudweed)
Pseudognaphalium
obtusifolium
(sweet everlasting)
Pseudognaphalium
spp.
(rabbit-tobaccos)
Pseudognaphalium
stramineum
(cottonbatting plant)
Pseudogynoxys
chenopodioides
(Mexican Flame Vine)
Pseudogynoxys
spp.
Pseudolarix
amabilis
(Golden Larch)
Pseudolarix
spp.
(Golden Larch)
Pseudopanax
(Lancewood)
Pseudosasa
japonica
(Arrow Bamboo)
Pseudosasa
spp.
Pseudoscleropodium
purum
(Neat Feather-moss)
Pseudoscleropodium
spp.
Pseudotrillium
rivale
(brook wakerobin)
Pseudotrillium
spp.
Pseudotsuga
menziesii
(Douglas fir)
Pseudotsuga
menziesii
'Graceful Grace'
(Graceful Grace Douglas Fir)
Pseudotsuga
menziesii
'Pendula'
(weeping Douglas fir)
Pseudotsuga
menziesii
var.
glauca
(Rocky Mountain Douglas fir)
Pseudotsuga
spp.
(Douglas-firs)
Psidium
guajava
(White Guava)
Psidium
spp.
(guavas)
Psilotum
nudum
(skeleton fork fern)
Psilotum
spp.
Psorodendron
schottii
(indigo-bush)
Psorodendron
spinosum
(Smoketree)
Psorodendron
spp.
Psychotria
loniceroides
(Hairy Psychotria)
Psychotria
nervosa
(Shiny-leaved Wild Coffee)
Psychotria
spp.
(wild coffees)
Psydrax
odoratus
(Lamboto)
Psydrax
spp.
Ptelea
spp.
Ptelea
trifoliata
(common hoptree)
Pteridium
aquilinum
(bracken fern)
Pteridium
esculentum
(Austral Bracken)
Pteridium
spp.
(brackens)
Pteris
spp.
(brakes)
Pteris
tremula
(Shaking Brake)
Pterocarya
(Wingnut)
Pterocarya
fraxinifolia
(Caucasian Wingnut)
Pterocaulon
pycnostachyum
(blackroot)
Pterocaulon
spp.
Pterospora
andromedea
(woodland pinedrops)
Pterospora
spp.
Pterostylis
alpina
(Australian mountain greenhood)
Pterostylis
concinna
(Trim Greenhood)
Pterostylis
curta
(blunt greenhood)
Pterostylis
grandiflora
(cobra greenhood)
Pterostylis
melagramma
(tall greenhood)
Pterostylis
nana
(dwarf greenhood)
Pterostylis
nutans
(Nodding Greenhood)
Pterostylis
parviflora
(tiny greenhood)
Pterostylis
pedunculata
(maroonhood)
Pterostylis
recurva
(jug orchid)
Pterostylis
sanguinea
(Red-banded Greenhood)
Pterostylis
spp.
(Greenhoods)
Pterostylis
vittata
(Banded Greenhood)
Pterostyrax
spp.
(Epaulette Tree)
Ptilimnium
capillaceum
(herbwilliam)
Ptilimnium
spp.
Ptilotus
exaltatus
(Pink Mulla Mulla)
Ptilotus
obovatus
(cotton bush)
Ptilotus
polystachyus
(Prince of Wales Feather)
Ptilotus
spp.
Ptychomnion
aciculare
(pipe-cleaner moss)
Ptychomnion
spp.
Ptychostomum
capillare
(Capillary Thread-moss)
Ptychostomum
spp.
(Ptychostomum mosses)
Pueraria
montana
(kudzu)
Pueraria
spp.
Pulicaria
dysenterica
(Common Fleabane)
Pulicaria
spp.
Pullenia
gunnii
(slender tick-trefoil)
Pullenia
spp.
Pulmonaria
(lungwort)
Pulmonaria
obscura
(Suffolk Lungwort)
Pulmonaria
officinalis
(Lungwort)
Pulmonaria
×
'Trevi Fountain'
(Trevi Fountain Lungwort)
Pulsatilla
nuttalliana
(prairie pasqueflower)
Pulsatilla
occidentalis
(Western pasqueflower)
Pulsatilla
patens
(Eastern Pasque Flower)
Pulsatilla
spp.
(pasqueflowers)
Pulsatilla
vulgaris
(common pasqueflower)
Pultenaea
daphnoides
(Large-leaf Bush Pea)
Pultenaea
gunnii
(golden bush-pea)
Pultenaea
juniperina
(prickly beauty)
Pultenaea
pedunculata
(matted bush-pea)
Pultenaea
retusa
(Notched Bush-pea)
Pultenaea
scabra
(Rough Bush-pea)
Pultenaea
spp.
(Bush-peas)
Pultenaea
tuberculata
(Wreath Bush-pea)
Pultenaea
villosa
(Hairy Bush-pea)
Pulvigera
spp.
(Bristle Mosses)
Purshia
spp.
Purshia
stansburyana
(Stansbury's Cliffrose)
Purshia
tridentata
(Antelope Bitterbrush)
Puschkinia
spp.
(Striped Squill)
Puya
spp.
(Puya)
Pycnanthemum
muticum
(Short-Toothed Mountain Mint)
Pycnanthemum
pilosum
(Hairy Mountain Mint)
Pycnanthemum
spp.
(mountain mints)
Pycnanthemum
tenuifolium
(narrowleaf mountainmint)
Pycnanthemum
virginianum
(Virginia Mountain Mint)
Pyracantha
(firethorns)
Pyracantha
coccinea
(Scarlet Firethorn)
Pyracantha
spp.
(firethorn pyracantha)
Pyrola
americana
(American wintergreen)
Pyrola
asarifolia
(bog wintergreen)
Pyrola
elliptica
(shinleaf)
Pyrola
picta
(white-veined wintergreen)
Pyrola
spp.
(wintergreens)
Pyrorchis
nigricans
(Red Beaks)
Pyrorchis
spp.
Pyrrhopappus
carolinianus
(Carolina desert-chicory)
Pyrrhopappus
pauciflorus
(smallflower desert-chicory)
Pyrrhopappus
spp.
(desert-chicories)
Pyrrosia
rupestris
(Rock Felt Fern)
Pyrrosia
spp.
(Felt Ferns)
Pyrus
(Pear)
Pyrus
calleryana
(Callery flowering pear)
Pyrus
salicifolia
'Pendula'
(Weeping Silver Pear)
Quercus
acuta
(Japanese Evergreen Oak)
Quercus
×
acutidens
(Torrey's Hybrid Oak)
Quercus
acutissima
(Sawtooth Oak)
Quercus
agrifolia
(Coast Live Oak)
Quercus
alba
(White Oak)
Quercus
×
alvordiana
(Alvord Oak)
Quercus
berberidifolia
(California scrub oak)
Quercus
bicolor
(Swamp White Oak)
Quercus
buckleyi
(Buckley's oak)
Quercus
cerris
(Turkey Oak)
Quercus
chrysolepis
(Canyon Live Oak)
Quercus
coccinea
(scarlet oak)
Quercus
douglasii
(blue oak)
Quercus
durata
(Leather Oak)
Quercus
×
eplingii
(Epling's Oak)
Quercus
×
ewanii
(Ewan's Oak)
Quercus
falcata
(Southern Red Oak Tree)
Quercus
frainetto
(Hungarian oak)
Quercus
fusiformis
(Texas live oak)
Quercus
gambelii
(Gambel Oak)
Quercus
×
ganderi
(Gander oak)
Quercus
garryana
(Oregon white oak, Garry oak)
Quercus
geminata
(sand live oak)
Quercus
hemisphaerica
(Darlington Oak)
Quercus
hypoleucoides
(Silverleaf Oak)
Quercus
ilex
(holly oak)
Quercus
ilicifolia
(bear oak)
Quercus
imbricaria
(Shingle Oak)
Quercus
×
jolonensis
(Jolon Oak)
Quercus
kelloggii
(Black Oak)
Quercus
laevis
(American turkey oak)
Quercus
laurifolia
(swamp laurel oak)
Quercus
lobata
(Valley Oak)
Quercus
lyrata
(overcup oak)
Quercus
macrocarpa
(Bur Oak)
Quercus
marilandica
(blackjack oak)
Quercus
michauxii
(swamp chestnut oak)
Quercus
montana
(chestnut oak)
Quercus
×
morehus
(Oracle Oak)
Quercus
muehlenbergii
(chinkapin oak)
Quercus
myrtifolia
(Myrtle Oak)
Quercus
nigra
(water oak)
Quercus
palustris
(pin oak)
Quercus
petraea
(sessile oak)
Quercus
phellos
(Willow Oak)
Quercus
phillyreoides
(Ubame Oak)
Quercus
robur
(English oak)
Quercus
robur
'Concordia'
(Golden Oak)
Quercus
rotundifolia
(sweet acorn oak)
Quercus
rubra
(red oak)
Quercus
sadleriana
(Sadler's Oak)
Quercus
×
saulii
(Saul's oak)
Quercus
shumardii
(Shumard Oak Tree)
Quercus
spp.
(oaks)
Quercus
stellata
(post oak)
Quercus
suber
(cork oak)
Quercus
texana
(Nuttall Oak Tree)
Quercus
turbinella
(Sonoran scrub oak)
Quercus
×
undulata
(Wavyleaf Oak)
Quercus
vacciniifolia
(Huckleberry Oak)
Quercus
velutina
(black oak)
Quercus
virginiana
(Southern Live Oak)
Quercus
wislizeni
(Interior Live Oak)
Rabelera
holostea
(greater stitchwort)
Rabelera
spp.
Racomitrium
lanuginosum
(Woolly Fringe-moss)
Racomitrium
spp.
(fringe-mosses)
Radula
complanata
(Flat-leaved Scalewort)
Radula
spp.
Rafinesquia
neomexicana
(Desert Chicory)
Rafinesquia
spp.
Ranunculus
abortivus
(small-flowered buttercup)
Ranunculus
acris
(meadow buttercup)
Ranunculus
aquatilis
(common water-crowfoot)
Ranunculus
asiaticus
(Persian Buttercup)
Ranunculus
auricomus
(Goldilocks Buttercup)
Ranunculus
bulbosus
(bulbous buttercup)
Ranunculus
californicus
(California buttercup)
Ranunculus
fascicularis
(Early Buttercup)
Ranunculus
flammula
(Lesser Spearwort)
Ranunculus
glaberrimus
(sagebrush buttercup)
Ranunculus
lappaceus
(Australian Buttercup)
Ranunculus
lingua
(Greater Spearwort)
Ranunculus
muricatus
(Rough-fruited buttercup)
Ranunculus
occidentalis
(Western Buttercup)
Ranunculus
omiophyllus
(Round-leaved Crowfoot)
Ranunculus
recurvatus
(Hooked buttercup)
Ranunculus
repens
(creeping buttercup)
Ranunculus
sardous
(hairy buttercup)
Ranunculus
sceleratus
(cursed crowfoot)
Ranunculus
spp.
(buttercups)
Raphanus
raphanistrum
(Wild radish)
Raphanus
spp.
(Radishes)
Rapistrum
rugosum
(annual bastard cabbage)
Rapistrum
spp.
Ratibida
columnifera
(upright prairie coneflower)
Ratibida
pinnata
(grey-headed coneflower)
Ratibida
spp.
Ravenala
spp.
(traveller's palm)
Ravenea
rivularis
(Majesty Palm)
Ravenea
spp.
Rehderodendron
macrocarpum
(Large-fruited Rehderodendron)
Rehderodendron
spp.
Reseda
lutea
(Wild Mignonette)
Reseda
luteola
(Weld)
Reseda
spp.
(mignonettes)
Restio
(Cape Reed)
Reynoutria
×
bohemica
(Bohemian Knotweed)
Reynoutria
japonica
(Japanese knotweed)
Reynoutria
spp.
(Rhizomatous Knotweeds)
Rhagodia
candolleana
(Seaberry Saltbush)
Rhagodia
spp.
Rhamnus
cathartica
(common buckthorn)
Rhamnus
crocea
(Redberry Buckthorn)
Rhamnus
ilicifolia
(hollyleaf redberry)
Rhamnus
spp.
(Buckthorns)
Rhaphiolepis
indica
(Indian Hawthorn)
Rhaphiolepis
spp.
(Indian hawthorn)
Rhaphiolepis
umbellata
'Minor'
(rhaphiolepis)
Rhapidophyllum
hystrix
(Needle Palm)
Rhapidophyllum
spp.
Rhapis
excelsa
(Lady Palm Tree)
Rhapis
spp.
Rheum
palmatum
'Atrosanguineum'
(ornamental rhubarb)
Rheum
rhabarbarum
(Rhubarb)
Rheum
spp.
Rhexia
mariana
(Maryland meadowbeauty)
Rhexia
spp.
(Meadowbeauties)
Rhexia
virginica
(Virginia meadowbeauty)
Rhinanthus
minor
(Yellow Rattle)
Rhinanthus
spp.
(Rattles)
Rhinotropis
californica
(California milkwort)
Rhinotropis
spp.
Rhizomnium
punctatum
(Dotted Thyme-moss)
Rhizomnium
spp.
(Rhizomnium mosses)
Rhizophora
mangle
(red mangrove)
Rhizophora
spp.
(true mangroves)
Rhizophora
stylosa
(spotted mangrove)
Rhodamnia
rubescens
(scrub turpentine)
Rhodamnia
spp.
Rhodanthemum
hosmariense
(Moroccan Daisy)
Rhodanthemum
spp.
(Moroccan Daisy)
Rhodiola
integrifolia
(western roseroot)
Rhodiola
pachyclados
(Thick-branched Stonecrop)
Rhodiola
rosea
(Roseroot)
Rhodiola
spp.
Rhodochiton
atrosanguineus
(purple bell vine)
Rhodochiton
spp.
Rhododendron
'Anah Kruschke'
(Anah Kruschke Rhododendron)
Rhododendron
augustinii
(Augustine Rhododendron)
Rhododendron
'Azurro'
(Azurro Rhododendron)
Rhododendron
'Bow Bells'
(Bow Bells Rhododendron)
Rhododendron
bureavii
(Bureau's Rhododendron)
Rhododendron
calendulaceum
(Flame Azalea)
Rhododendron
canescens
(Mountain Azalea)
Rhododendron
cf.
catawbiense
(lavender
hybrid)
(Lavender Rhododendron)
Rhododendron
cf.
catawbiense
(red
hybrid)
(Red Rhododendron)
Rhododendron
'Christmas Cheer'
(Christmas Cheer Rhododendron)
Rhododendron
'Cilpinense'
(Cilpinense Rhododendron)
Rhododendron
'Conversation Piece'
(Conversation Piece Azalea)
Rhododendron
'Fantastica'
(Fantastica Rhododendron)
Rhododendron
'Fred Peste'
(Fred Peste Rhododendron)
Rhododendron
'Girard'
's Crimson'
(Girard's Crimson Azalea)
Rhododendron
'Girard'
's Fuchsia'
(Girard's Fuchsia Azalea)
Rhododendron
'Glacier'
(Glacier Rhododendron)
Rhododendron
groenlandicum
(Labrador Tea)
Rhododendron
'Hachmann'
's Charmant'
(Hachmann's Charmant)
Rhododendron
'Hardy Gardenia'
(Hardy Gardenia Azalea)
Rhododendron
'Herbert'
(Herbert Rhododendron)
Rhododendron
'Hino-Crimson'
(Hino-Crimson Azalea)
Rhododendron
'Hinode-giri'
(Hinode-giri Azalea)
Rhododendron
×
hybridum
(garden rhododendron)
Rhododendron
impeditum
(Dwarf Purple Rhododendron)
Rhododendron
indicum
(southern Indian azalea)
Rhododendron
japonicum
(Japanese azalea)
Rhododendron
'Ken Janeck'
(Ken Janeck Rhododendron)
Rhododendron
lepidotum
(scaly rhododendron)
Rhododendron
luteum
(Yellow Azalea)
Rhododendron
macrophyllum
(Pacific Rhododendron)
Rhododendron
maximum
(great rhododendron)
Rhododendron
menziesii
(mock azalea)
Rhododendron
mucronulatum
(Korean azalea)
Rhododendron
'Nancy Evans'
(Nancy Evans Rhododendron)
Rhododendron
'Nova Zembla'
(Nova Zembla Rhododendron)
Rhododendron
occidentale
(western azalea)
Rhododendron
'Odee Wright'
(Odee Wright Rhododendron)
Rhododendron
periclymenoides
(Pinxter Flower)
Rhododendron
'PJM'
(PJM Rhododendron)
Rhododendron
ponticum
(Common Rhododendron)
Rhododendron
'President Roosevelt'
(President Roosevelt Rhododendron)
Rhododendron
prinophyllum
(early azalea)
Rhododendron
quinquefolium
(quinquefolium azalea)
Rhododendron
'Rosa Mundi'
(Rosa Mundi Rhododendron)
Rhododendron
'Roseum Pink'
(Roseum Pink Rhododendron)
Rhododendron
schlippenbachii
(royal azalea)
Rhododendron
simsii
(Indian Azalea)
Rhododendron
'Snowbird'
(Snowbird Rhododendron)
Rhododendron
spp.
(rhododendrons and azaleas)
Rhododendron
stenopetalum
'Linearifolium'
(spider azalea)
Rhododendron
'Unique'
(Unique Rhododendron)
Rhododendron
viscosum
(swamp azalea)
Rhododendron
'Vulcan'
's Flame'
(Vulcan's Flame Rhododendron)
Rhododendron
yakushimanum
(yakushima rhododendron)
Rhodomyrtus
psidioides
(Native Guava)
Rhodomyrtus
spp.
Rhodosphaera
rhodanthema
(deep yellow wood)
Rhodosphaera
spp.
Rhodotypos
scandens
(jetbead)
Rhodotypos
spp.
Rhus
aromatica
(fragrant sumac)
Rhus
copallinum
(shining sumac)
Rhus
glabra
(smooth sumac)
Rhus
integrifolia
(lemonade berry)
Rhus
lanceolata
(Prairie flameleaf sumac)
Rhus
ovata
(sugar bush)
Rhus
×
pulvinata
(Northern Sumac)
Rhus
spp.
(sumacs)
Rhus
trichocarpa
(Hairy-fruited Sumac)
Rhus
trilobata
(Skunkbush Sumac)
Rhus
typhina
(staghorn sumac)
Rhus
typhina
'Dissecta'
(cutleaf staghorn sumac)
Rhus
virens
(evergreen sumac)
Rhynchosia
spp.
(Snoutbeans)
Rhynchospora
colorata
(White-Top Sedge)
Rhynchospora
spp.
(Beaksedges)
Rhynchostegium
confertum
(Clustered Feather-moss)
Rhynchostegium
spp.
Rhytidiadelphus
loreus
(Lanky Moss)
Rhytidiadelphus
spp.
Rhytidiadelphus
squarrosus
(Square Gooseneck Moss)
Rhytidosporum
procumbens
(white marianth)
Rhytidosporum
spp.
Ribes
americanum
(American Black Currant)
Ribes
aureum
(Golden Currant)
Ribes
bracteosum
(stink current)
Ribes
cereum
(wax currant)
Ribes
cynosbati
(prickly gooseberry)
Ribes
divaricatum
(Coast Black Gooseberry)
Ribes
×
gordonianum
(Gordon's Currant)
Ribes
lacustre
(swamp gooseberry)
Ribes
malvaceum
(Chaparral Currant)
Ribes
missouriense
(Missouri Gooseberry)
Ribes
nevadense
(mountain pink currant)
Ribes
nigrum
(Blackcurrant)
Ribes
roezlii
(Sierra Gooseberry)
Ribes
rubrum
(Red Currant)
Ribes
sanguineum
(red flowering currant)
Ribes
sanguineum
'Pulborough Scarlet'
(Pulborough Scarlet Currant)
Ribes
speciosum
(Fuchsiaflower Gooseberry)
Ribes
spp.
(currants and gooseberries)
Ribes
uva-crispa
(European gooseberry)
Riccia
spp.
(Crystalworts)
Richardia
grandiflora
(largeflower Mexican clover)
Richardia
spp.
(Mexican clovers)
Richea
pandanifolia
(Pandani)
Richea
scoparia
(scoparia)
Richea
spp.
Ricinocarpos
pinifolius
(Wedding Bush)
Ricinocarpos
spp.
Ricinus
communis
(castor bean)
Ricinus
spp.
Rivina
humilis
(pigeonberry)
Rivina
spp.
Robinia
pseudoacacia
(black locust)
Robinia
pseudoacacia
'Frisia'
(golden black locust)
Robinia
spp.
(Locust Trees)
Rodgersia
(rodgersia)
Rodgersia
aesculifolia
(Fingerleaf Rodgersia)
Rodgersia
pinnata
(Featherleaf Rodgersia)
Rodgersia
podophylla
(Bronzeleaf Rodgersia)
Roepera
spp.
(Twinleaves)
Romneya
coulteri
(Matilija poppy)
Romneya
spp.
(Matilija poppies)
Romulea
rosea
(Rosy sandcrocus)
Romulea
spp.
(Froetangs)
Rorippa
palustris
(Bog Yellowcress)
Rorippa
spp.
(yellowcresses)
Rosa
(floribunda)
Rosa
acicularis
(Prickly Wild Rose)
Rosa
'Adélaide d'
'Orléans'
(Adelaide d'Orleans Rose)
Rosa
'Alain Blanchard'
(Alain Blanchard Rose)
Rosa
'Apricot Drift'
(Apricot Drift Rose)
Rosa
arkansana
(prairie rose)
Rosa
arvensis
(Field Rose)
Rosa
'Autumn Sunset'
(Autumn Sunset Rose)
Rosa
'Ballerina'
(Ballerina Rose)
Rosa
banksiae
(Lady Banks Rose)
Rosa
banksiae
'Lutea'
(Lady Banks' Rose)
Rosa
'Bienenweide Rosa'
(Bee Pasture Rose)
Rosa
'Bolero'
(Bolero Rose)
Rosa
'Buff Beauty'
(Buff Beauty Rose)
Rosa
californica
(California Wild Rose)
Rosa
canina
(dog rose)
Rosa
carolina
(Carolina rose)
Rosa
'Chevy Chase'
(Rambler Rose)
Rosa
'Coral Drift'
(Coral Drift Rose)
Rosa
'Don Juan'
(Don Juan Rose)
Rosa
'Double Knock Out'
(Double Knock Out Rose)
Rosa
'Felicia'
(Felicia Rose)
Rosa
'Félicité et Perpétue'
(Felicite et Perpetue)
Rosa
(Floribunda
Group)
(floribunda roses)
Rosa
'Francis E. Lester'
(Francis E. Lester Rose)
Rosa
'Fru Dagmar Hastrup'
(Fru Dagmar Hastrup Rose)
Rosa
'Geranium'
(Geranium Rose)
Rosa
glauca
(redleaf rose)
Rosa
'Golden Wings'
(Golden Wings Rose)
Rosa
gymnocarpa
(bald-hip rose)
Rosa
'Hansa'
(Hansa Rose)
Rosa
'Intrigue'
(Intrigue Rose)
Rosa
'Julia Child'
(Julia Child Rose)
Rosa
'Lykkefund'
(Lykkefund Rose)
Rosa
'Marchesa Boccella'
(Marchesa Boccella Rose)
Rosa
multiflora
(multiflora rose)
Rosa
nutkana
(Nootka rose)
Rosa
odorata
'Mutabilis'
(Mutabilis Rose)
Rosa
palustris
(swamp rose)
Rosa
'Peach Drift'
(Peach Drift Rose)
Rosa
'Peggy Martin'
(Peggy Martin Rose)
Rosa
pisocarpa
(clustered wild rose)
Rosa
'Rose de Rescht'
(Rose de Rescht)
Rosa
rubiginosa
(Sweet-brier)
Rosa
rugosa
(rugosa rose)
Rosa
'Sally Holmes'
(Sally Holmes Rose)
Rosa
'Sander'
's White Rambler'
(Sanders' White Rambler)
Rosa
'Seagull'
(Seagull Rose)
Rosa
setigera
(climbing prairie rose)
Rosa
'Special Anniversary'
(Rose)
Rosa
spinosissima
(Burnet Rose)
Rosa
spinosissima
'Dunwich Rose'
(Dunwich Rose)
Rosa
spinosissima
'Falkland'
(Scots Rose 'Falkland')
Rosa
'Stanwell Perpetual'
(Stanwell Perpetual Rose)
Rosa
'Sweet Drift'
(Sweet Drift Rose)
Rosa
'The Generous Gardener'
(The Generous Gardener Rose)
Rosa
willmottiae
(Willmott's Rose)
Rosa
woodsii
(Woods Rose)
Rosmarinus
officinalis
'Tuscan Blue'
(Tuscan Blue Rosemary)
Rosmarinus
spp.
Rosulabryum
billardierei
Rosulabryum
spp.
Roystonea
spp.
(Royal palms)
Rubia
peregrina
(Wild Madder)
Rubia
spp.
Rubus
allegheniensis
(Allegheny blackberry)
Rubus
armeniacus
(Himalayan blackberry)
Rubus
caesius
(European dewberry)
Rubus
calycinoides
(Creeping Raspberry)
Rubus
chamaemorus
(cloudberry)
Rubus
'Chester'
(Chester Thornless Blackberry)
Rubus
cuneifolius
(sand blackberry)
Rubus
ellipticus
(Golden Raspberry)
Rubus
flagellaris
(Common Dewberry)
Rubus
fruticosus
(Blackberry)
Rubus
hayata-koidzumii
(creeping raspberry)
Rubus
hispidus
(swamp dewberry)
Rubus
idaeus
(raspberry)
Rubus
laciniatus
(evergreen blackberry)
Rubus
leucodermis
(Blackcap Raspberry)
Rubus
moluccanus
(Molucca Bramble)
Rubus
occidentalis
(black raspberry)
Rubus
odoratus
(purple-flowered raspberry)
Rubus
parviflorus
(thimbleberry)
Rubus
parvifolius
(small-leaf bramble)
Rubus
pensilvanicus
(Pennsylvania Blackberry)
Rubus
phoenicolasius
(wineberry)
Rubus
pubescens
(dwarf raspberry)
Rubus
rolfei
(Creeping Bramble)
Rubus
rosifolius
(roseleaf bramble)
Rubus
spectabilis
(salmonberry)
Rubus
spectabilis
'Olympic Double'
(Olympic Double Salmonberry)
Rubus
spp.
(brambles)
Rubus
tricolor
(Chinese Bramble)
Rubus
trivialis
(southern dewberry)
Rubus
tuberculatus
(Ruderal Corylifolian)
Rubus
ulmifolius
(elmleaf blackberry)
Rubus
ursinus
(trailing blackberry)
Rubus
vestitus
(Vested Blackberry)
Rudbeckia
×
'American Gold Rush'
(American Gold Rush Black-Eyed Susan)
Rudbeckia
amplexicaulis
(clasping coneflower)
Rudbeckia
fulgida
(Black-eyed Susan)
Rudbeckia
fulgida
var.
deamii
(Deams Black-Eyed Susan)
Rudbeckia
fulgida
var.
fulgida
(Orange Coneflower)
Rudbeckia
fulgida
var.
speciosa
'Viette'
s
Little
Suzy'
(Little Suzy Black-Eyed Susan)
Rudbeckia
fulgida
var.
sullivantii
'Goldsturm'
(black-eyed Susan)
Rudbeckia
hirta
(large black-eyed Susan)
Rudbeckia
hirta
'Indian Summer'
(Indian Summer Black-Eyed Susan)
Rudbeckia
hirta
'Prairie Sun'
(Prairie Sun Rudbeckia)
Rudbeckia
laciniata
(cutleaf coneflower)
Rudbeckia
occidentalis
(Western Black-eyed Susan)
Rudbeckia
spp.
(black-eyed Susans and coneflowers)
Rudbeckia
subtomentosa
(sweet black-eyed Susan)
Rudbeckia
triloba
(Brown-Eyed Susan)
Ruellia
caroliniensis
(Carolina ruellia)
Ruellia
humilis
(hairy ruellia)
Ruellia
nudiflora
(violet ruellia)
Ruellia
simplex
(Mexican Petunia)
Ruellia
spp.
(Ruellias)
Ruellia
strepens
(smooth ruellia)
Rumex
acetosa
(Sorrel)
Rumex
acetosella
(sheep sorrel)
Rumex
brownii
(Slender Dock)
Rumex
conglomeratus
(Clustered Dock)
Rumex
crispus
(curly-leaved dock)
Rumex
cristatus
(Greek Dock)
Rumex
hastatulus
(Hastate-leaved dock)
Rumex
hydrolapathum
(Water Dock)
Rumex
hymenosepalus
(Canaigre Dock)
Rumex
obtusifolius
(broad-leaved dock)
Rumex
sagittatus
(Climbing dock)
Rumex
salicifolius
(willow dock)
Rumex
sanguineus
(Wood Dock)
Rumex
spp.
(docks and sorrels)
Ruschia
spp.
(Tentfigs)
Ruscus
aculeatus
(butcher's-broom)
Ruscus
spp.
Russelia
spp.
(Firecracker Plant)
Ruta
spp.
(rues)
Rytidosperma
pallidum
(red-anther wallaby grass)
Rytidosperma
spp.
(Wallaby grasses)
Sabal
minor
(Dwarf Palmetto)
Sabal
palmetto
(cabbage palmetto)
Sabal
spp.
(Palmettos)
Sabatia
angularis
(Rosepink)
Sabatia
campestris
(Meadow Pink)
Sabatia
spp.
(rose gentians)
Sabatia
stellaris
(marsh pink)
Sagina
procumbens
(pearlwort)
Sagina
spp.
(pearlworts)
Sagina
subulata
(Irish moss)
Sagina
subulata
'Aurea'
(Golden Irish Moss)
Sagittaria
lancifolia
(lanceleaf arrowhead)
Sagittaria
latifolia
(Wapato)
Sagittaria
sagittifolia
(Arrowhead)
Sagittaria
spp.
(Arrowheads)
Saintpaulia
ionantha
(variegated)
(Variegated African Violet)
Saintpaulia
spp.
Sairocarpus
nuttallianus
(Nuttall's Snapdragon)
Sairocarpus
spp.
Salicornia
europaea
(Common Glasswort)
Salicornia
pacifica
(Pacific Glasswort)
Salicornia
quinqueflora
(Beaded Samphire)
Salicornia
spp.
(pickleweeds)
Salix
alba
(white willow)
Salix
alba
'Tristis'
(Golden Weeping Willow)
Salix
atrocinerea
(Rusty Willow)
Salix
aurita
(Eared Willow)
Salix
babylonica
(weeping willow)
Salix
babylonica
'Tortuosa'
(corkscrew willow)
Salix
caprea
(goat willow)
Salix
caroliniana
(Carolina willow)
Salix
cinerea
(Grey Willow)
Salix
discolor
(White Pussy Willow)
Salix
exigua
(Narrowleaf Willow)
Salix
×
fragilis
(hybrid crack willow)
Salix
gooddingii
(Goodding's willow)
Salix
hookeriana
(Coastal Willow)
Salix
integra
'Hakuro Nishiki'
(Variegated Willow)
Salix
interior
(interior sandbar willow)
Salix
laevigata
(red willow)
Salix
lasiandra
(Pacific willow)
Salix
lasiolepis
(Arroyo Willow)
Salix
×
matsudana
×
alba
(Willow Hybrid Tree)
Salix
nakamurana
var.
yezoalpina
(Yezo Alpine Willow)
Salix
nigra
(black willow)
Salix
purpurea
(Purple Willow)
Salix
purpurea
'Nana'
(dwarf Alaskan purple willow)
Salix
repens
(Creeping Willow)
Salix
scouleriana
(Scouler’s willow)
Salix
sitchensis
(Sitka willow)
Salix
spp.
(Willows)
Salix
viminalis
(basket willow)
Salsola
australis
(Southern Russian Thistle)
Salsola
spp.
(Russian Thistles)
Salsola
tragus
(Prickly Russian Thistle)
Salvia
(Sages)
Salvia
×
'Amistad'
(Amistad Sage)
Salvia
apiana
(white sage)
Salvia
azurea
(giant blue sage)
Salvia
canariensis
(Canary Island Sage)
Salvia
canescens
var.
daghestanica
(Daghestan Sage)
Salvia
coccinea
(Tropical sage)
Salvia
columbariae
(Chia)
Salvia
confertiflora
(Red Velvet Sage)
Salvia
dorrii
(Dorr's Sage)
Salvia
farinacea
(mealy sage)
Salvia
×
floriferior
(Russian Sage)
Salvia
fulgens
(cardinal sage)
Salvia
greggii
(Autumn sage)
Salvia
guaranitica
(anise-scented sage)
Salvia
×
'Indigo Spires'
(Indigo Spires Sage)
Salvia
leucantha
(Mexican Bush Sage)
Salvia
leucophylla
(purple sage)
Salvia
mellifera
(black sage)
Salvia
microphylla
(Baby Sage)
Salvia
microphylla
'Hot Lips'
(baby sage, Hot Lips)
Salvia
nemorosa
(Woodland Sage)
Salvia
nemorosa
'Blue Hill'
(Blue Hill Meadow Sage)
Salvia
nemorosa
'Caradonna'
(Caradonna Meadow Sage)
Salvia
nemorosa
'East Friesland'
(East Friesland Meadow Sage)
Salvia
nemorosa
'May Night'
(May Night woodland sage)
Salvia
nutans
(Nodding Sage)
Salvia
officinalis
(Garden Sage)
Salvia
ringens
(Ringens Sage)
Salvia
rosmarinus
(rosemary)
Salvia
spathacea
(Hummingbird Sage)
Salvia
sylvestris
'Mainacht'
(May Night Sage)
Salvia
verbenaca
(wild clary)
Salvia
verticillata
'Purple Rain'
(Purple Rain Sage)
Salvia
x
sylvestris
'Caradonna'
(caradonna sage)
Salvia
yangii
(Russian Sage)
Sambucus
(elders)
Sambucus
canadensis
(American black elderberry)
Sambucus
cerulea
(Blue Elderberry)
Sambucus
gaudichaudiana
(White Elderberry)
Sambucus
nigra
(Black Elder)
Sambucus
nigra
'Black Lace'
(Black Lace Elderberry)
Sambucus
nigra
'Eva'
(Black Beauty Elderberry)
Sambucus
nigra
f.
laciniata
(Cut-leaved Elder)
Sambucus
nigra
'Guincho Purple'
(Guincho Purple Elder)
Sambucus
racemosa
(red elderberry)
Sambucus
racemosa
'Plumosa Aurea'
(Golden Elder)
Sambucus
spp.
(elderberry)
Samolus
parviflorus
(seaside brookweed)
Samolus
repens
(Sea Primrose)
Samolus
spp.
Sanchezia
spp.
(Sanchezia)
Sanguinaria
spp.
(Bloodroot)
Sanguisorba
minor
(Salad Burnet)
Sanguisorba
spp.
(burnets)
Sanguisorbia
hakusanensis
'Lilac Squirrel'
(Pink squirrel tails)
Sanguisorbia
spp.
(Burnet)
Sanicula
bipinnatifida
(Purple Sanicle)
Sanicula
canadensis
(Black Snakeroot)
Sanicula
crassicaulis
(Pacific Sanicle)
Sanicula
europaea
(wood sanicle)
Sanicula
odorata
(Clustered Sanicle)
Sanicula
spp.
(sanicles)
Sansevieria
spp.
(Mother-in-law's Tongues)
Sansevieria
trifasciata
(Snake Plant)
Santalum
acuminatum
(Desert Quandong)
Santalum
lanceolatum
(Blue Bush)
Santalum
spp.
Santolina
chamaecyparissus
(cotton vavender)
Santolina
rosmarinifolia
(Green Lavender Cotton)
Santolina
spp.
(Lavender-cottons)
Sapindus
drummondii
(Western Soapberry)
Sapindus
spp.
Saponaria
officinalis
(common soapwort)
Saponaria
spp.
Sarcobatus
spp.
Sarcobatus
vermiculatus
(Greasewood)
Sarcococca
confusa
(tall sarcococca)
Sarcococca
hookeriana
var.
humilis
(low sarcococca)
Sarcococca
ruscifolia
(Fragrant Sweet Box)
Sarcococca
spp.
Sarcodes
sanguinea
(Snowplant)
Sarcodes
spp.
Sarcopetalum
harveyanum
(pearl vine)
Sarcopetalum
spp.
Sarracenia
flava
(yellow pitcher plant)
Sarracenia
leucophylla
(white pitcher plant)
Sarracenia
×
mitchelliana
(Mitchell's Pitcher Plant)
Sarracenia
×
moorei
(Moore's Pitcher Plant)
Sarracenia
×
naczii
(Naczi's Pitcher Plant)
Sarracenia
purpurea
(purple pitcher plant)
Sarracenia
spp.
(North American pitcher plants)
Saruma
henryi
(upright wild ginger)
Saruma
spp.
Sassafras
(Sassafras)
Satureja
hortensis
(Summer Savory)
Satureja
montana
(Winter Savory)
Satureja
spp.
Saururus
cernuus
(Lizard's Tail)
Saururus
spp.
Saxifraga
aizoides
(Yellow Saxifrage)
Saxifraga
granulata
(Meadow Saxifrage)
Saxifraga
spp.
(Saxifrages)
Saxifraga
stolonifera
(strawberry begonia)
Saxifraga
tridactylites
(Rue-leaved Saxifrage)
Saxifraga
umbrosa
(Wood Saxifrage)
Saxifraga
x
urbium
(London pride)
Scabiosa
'Butterfly Blue'
(dwarf blue pincushion flower)
Scabiosa
canescens
(Gray Pincushion Flower)
Scabiosa
caucasica
(pincushion flower)
Scabiosa
ochroleuca
(yellow pincushion)
Scabiosa
'Pink Mist'
(Pink Mist Scabious)
Scabiosa
spp.
(Pincushion flowers)
Scaevola
aemula
(Fairy Fan-flower)
Scaevola
albida
(white fanflower)
Scaevola
calendulacea
(dune fan-flower)
Scaevola
crassifolia
(Cushion Fanflower)
Scaevola
ramosissima
(Hairy Fan-flower)
Scaevola
spp.
(fanflowers)
Scaevola
taccada
(beach naupaka)
Scandosorbus
intermedia
(Swedish Whitebeam)
Scandosorbus
spp.
Scapania
spp.
(Earworts)
Sceptridium
dissectum
(Cutleaf Grapefern)
Sceptridium
spp.
(grapeferns)
Schefflera
arboricola
(Dwarf Umbrella Tree)
Schefflera
spp.
(umbrella trees)
Schefflera
taiwaniana
(Hardy Schefflera)
Schelhammera
spp.
Schelhammera
undulata
(lilac lily)
Schinus
areira
(Peppercorn Tree)
Schinus
molle
(Peruvian Pepper Tree)
Schinus
spp.
(peppertrees)
Schinus
terebinthifolia
(Brazilian pepper)
Schisandra
chinensis
(Five-flavor Berry)
Schisandra
spp.
Schistidium
crassipilum
(Thickpoint Bloom Moss)
Schistidium
spp.
(Schistidium mosses)
Schizachyrium
scoparium
(Little Bluestem)
Schizachyrium
spp.
Schizaea
bifida
(Forked Comb Fern)
Schizaea
spp.
Schizophragma
hydrangeoides
(Japanese Climbing Hydrangea)
Schizophragma
spp.
Schlumbergera
×
buckleyi
(Christmas Cactus)
Schlumbergera
spp.
(Christmas cacti)
Schoenoplectus
acutus
(hardstem bulrush)
Schoenoplectus
californicus
(California bulrush)
Schoenoplectus
spp.
(Schoenoplectus Bulrushes)
Schoenoplectus
tabernaemontani
(Soft-stem Bullrush)
Schoenus
apogon
(common bog-rush)
Schoenus
spp.
Sciadopitys
spp.
Sciadopitys
verticillata
(Japanese umbrella pine)
Scilla
forbesii
(Forbes' Glory-of-the-snow)
Scilla
siberica
(Siberian Squill)
Scilla
spp.
(Squills)
Scilla
verna
(Spring Squill)
Scindapsus
pictus
(Satin Pothos)
Scindapsus
spp.
Scirpus
atrovirens
(dark green bulrush)
Scirpus
cyperinus
(Woolgrass)
Scirpus
microcarpus
(small-fruited bulrush)
Scirpus
spp.
(Scirpus Bulrushes)
Scleranthus
biflorus
(Knawel Cushion)
Scleranthus
spp.
Scleria
spp.
(nutrushes)
Scoliopus
bigelovii
(California fetid adderstongue)
Scoliopus
spp.
Scorzoneroides
autumnalis
(Autumn Hawkbit)
Scorzoneroides
spp.
Scrophularia
californica
(California beeplant)
Scrophularia
marilandica
(late figwort)
Scrophularia
nodosa
(Common Figwort)
Scrophularia
spp.
(figworts)
Scutellaria
drummondii
(Drummond's skullcap)
Scutellaria
elliptica
(Hairy Skullcap)
Scutellaria
galericulata
(Marsh Skullcap)
Scutellaria
integrifolia
(Helmet skullcap)
Scutellaria
lateriflora
(side-flowering skullcap)
Scutellaria
mexicana
(Paperbag Bush)
Scutellaria
nana
(Dwarf Skullcap)
Scutellaria
ovata
(Heart-leaved Skullcap)
Scutellaria
spp.
(skullcaps)
Scutellaria
suffrutescens
(Pink Skullcap)
Searsia
spp.
(Karees)
Securigera
spp.
Securigera
varia
(purple crownvetch)
Sedum
(Stonecrop)
Sedum
acre
(Biting Stonecrop)
Sedum
anglicum
(English Stonecrop)
Sedum
×
'Autumn Fire'
(Autumn Fire Stonecrop)
Sedum
'Bertram Anderson'
(Bertram Anderson Stonecrop)
Sedum
divergens
(Spreading Stonecrop)
Sedum
ewersii
(Pink Stonecrop)
Sedum
kamtschaticum
(Kamchatka Stonecrop)
Sedum
kimnachii
(Kimnach's Stonecrop)
Sedum
lanceolatum
(Spearleaf Stonecrop)
Sedum
oreganum
(Oregon Stonecrop)
Sedum
'Purple Emperor'
(Purple Emperor Stonecrop)
Sedum
×
rubrotinctum
(Christmas-cheer)
Sedum
sarmentosum
(Stringy Stonecrop)
Sedum
sexangulare
(Tasteless Stonecrop)
Sedum
sieboldii
(October Daphne)
Sedum
spathifolium
'Cape Blanco'
(Cape Blanco sedum)
Sedum
spathulifolium
(Broadleaf Stonecrop)
Sedum
spectabile
(sedum)
Sedum
spectabile
'Autumn Joy'
(Autumn Joy Stonecrop)
Sedum
stenopetalum
(Wormleaf Stonecrop)
Sedum
ternatum
(woodland stonecrop)
Sedum
×
'Vera Jameson'
(Vera Jameson Stonecrop)
Selaginella
bigelovii
(Bigelow's Spikemoss)
Selaginella
spp.
(Spikemosses)
Selaginella
uliginosa
(Swamp Spikemoss)
Selago
spp.
(Bitterbushes)
Selenicereus
spp.
(moonlight cactuses)
Selenicereus
undatus
(Dragon Fruit)
Sematophyllum
homomallum
(Bronze Moss)
Sematophyllum
spp.
Sempervivum
(hens and chicks)
Sempervivum
arachnoideum
(cobweb houseleek)
Sempervivum
calcareum
(Houseleek)
Sempervivum
species
&
cvs
(Houseleek)
Sempervivum
tectorum
(Hens and Chicks)
Senecio
ampullaceus
(Texas ragwort)
Senecio
elegans
(Red-purple Ragwort)
Senecio
flaccidus
(threadleaf groundsel)
Senecio
glomeratus
(Cutleaf burnweed)
Senecio
hispidulus
(Hill Fireweed)
Senecio
inaequidens
(Narrow-leaved Ragwort)
Senecio
integerrimus
(Tall western groundsel)
Senecio
linearifolius
(fireweed groundsel)
Senecio
madagascariensis
(Madagascar Ragwort)
Senecio
minimus
(coastal burnweed)
Senecio
odoratus
(Scented Groundsel)
Senecio
pinnatifolius
(pinnate-leaved groundsel)
Senecio
pterophorus
(Shoddy Ragwort)
Senecio
quadridentatus
(cotton burnweed)
Senecio
spp.
(groundsels)
Senecio
squalidus
(Oxford Ragwort)
Senecio
sylvaticus
(wood groundsel)
Senecio
triangularis
(Arrowleaf Senecio)
Senecio
viscosus
(Sticky Groundsel)
Senecio
vulgaris
(common groundsel)
Senega
alba
(white milkwort)
Senegalia
greggii
(Catclaw Acacia)
Senegalia
spp.
(Hook-Thorns)
Senega
lutea
(orange milkwort)
Senega
nana
(candyroot)
Senega
paniculata
(rootbeer plant)
Senega
sanguinea
(field milkwort)
Senega
spp.
Senna
artemisioides
(silver senna)
Senna
bicapsularis
(Butterfly Bush Senna)
Senna
covesii
(Coues' senna)
Senna
hebecarpa
(American senna)
Senna
lindheimeriana
(Lindheimer's Senna)
Senna
marilandica
(Maryland senna)
Senna
obtusifolia
(American Sicklepod)
Senna
pendula
(Christmas Senna)
Senna
roemeriana
(Two-leaved Senna)
Senna
septemtrionalis
(Arsenic Bush)
Senna
spp.
(sennas)
Sequoiadendron
giganteum
(giant sequoia)
Sequoiadendron
giganteum
'Pendulum'
(weeping Giant Sequoia)
Sequoiadendron
spp.
Sequoia
sempervirens
(Coast Redwood)
Sequoia
spp.
(Redwood)
Serapias
spp.
(Tongue Orchids)
Serenoa
repens
(saw palmetto)
Serenoa
spp.
Serratula
seoanei
(Seoane's Saw-wort)
Serratula
spp.
(Saw-wort)
Sesbania
drummondii
(Rattlebush)
Sesbania
grandiflora
(Hummingbird Tree)
Sesbania
herbacea
(bigpod sesbania)
Sesbania
spp.
(riverhemps)
Sesbania
vesicaria
(Bladder Pod)
Seseli
libanotis
(Moon Carrot)
Seseli
spp.
Sesleria
(Moor Grass)
Sesleria
autumnalis
(Autumn Moor Grass)
Sesleria
heufleriana
(Balkan Moor Grass)
Sesleria
nitida
(Shining Moor Grass)
Sesleria
spp.
(moor grass)
Sesuvium
portulacastrum
(sea purslane)
Sesuvium
spp.
(Sea-purslanes)
Setaria
faberi
(giant foxtail)
Setaria
parviflora
(knotroot bristlegrass)
Setaria
pumila
(yellow foxtail)
Setaria
spp.
(foxtails and bristlegrasses)
Setaria
viridis
(Green Bristle Grass)
Shepherdia
argentea
(Silver Buffaloberry)
Shepherdia
canadensis
(Russet Buffaloberry)
Shepherdia
spp.
Sherardia
arvensis
(Field madder)
Sherardia
spp.
Shibataea
kumasasa
(Ruscus-leaved Bamboo)
Shibataea
spp.
Sibbaldiopsis
spp.
Sibbaldiopsis
tridentata
(three-toothed cinquefoil)
Sicyos
angulatus
(Oneseed Bur Cucumber)
Sicyos
spp.
Sida
abutilifolia
(spreading sida)
Sida
cordifolia
(flannel weed)
Sidalcea
campestris
(Meadow Checker-mallow)
Sidalcea
hendersonii
(Henderson's Checker-mallow)
Sidalcea
malviflora
(Rose Checker-mallow)
Sidalcea
oregana
(Oregon Checker-Mallow)
Sidalcea
sparsifolia
(Southern Checkerbloom)
Sidalcea
spp.
(Checkerblooms)
Sidalcea
virgata
(Virgate Checker-mallow)
Sida
rhombifolia
(Cuban jute)
Sida
spp.
(Sidas)
Sida
ulmifolia
(Common Fanpetals)
Sideroxylon
lanuginosum
(Gum bumelia)
Sideroxylon
spp.
Sigesbeckia
orientalis
(Eastern St Paul's-wort)
Sigesbeckia
spp.
Silene
acaulis
(Moss Campion)
Silene
coronaria
(Rose campion)
Silene
dioica
(red campion)
Silene
flos-cuculi
(ragged-robin)
Silene
gallica
(Small-flowered Catchfly)
Silene
×
hampeana
(Hybrid Campion)
Silene
inflata
(bladder campion)
Silene
laciniata
(cardinal catchfly)
Silene
latifolia
(white campion)
Silene
nocturna
(night-flowering catchfly)
Silene
spp.
(Catchflies)
Silene
stellata
(starry campion)
Silene
uniflora
(Sea Campion)
Silene
virginica
(fire pink)
Silene
vulgaris
(bladder campion)
Silphium
integrifolium
(prairie rosinweed)
Silphium
laciniatum
(compass plant)
Silphium
perfoliatum
(cup plant)
Silphium
spp.
(Rosinweeds)
Silphium
terebinthinaceum
(prairie dock)
Silybum
marianum
(milk thistle)
Silybum
spp.
Simmondsia
chinensis
(jojoba)
Simmondsia
spp.
Sinapis
alba
(White Mustard)
Sinapis
spp.
Sinojackia
(Chinese Jacktree)
Sison
amomum
(stone parsley)
Sison
spp.
Sisymbrium
altissimum
(Tall Tumblemustard)
Sisymbrium
irio
(London rocket)
Sisymbrium
loeselii
(False London-rocket)
Sisymbrium
officinale
(Hedge mustard)
Sisymbrium
orientale
(eastern rocket)
Sisymbrium
spp.
(Hedgemustards)
Sisyrinchium
angustifolium
(Blue-Eyed Grass)
Sisyrinchium
bellum
(western blue-eyed grass)
Sisyrinchium
californicum
(Golden Blue-eyed Grass)
Sisyrinchium
idahoense
(Idaho Blue-eyed Grass)
Sisyrinchium
micranthum
(Blue Pigroot)
Sisyrinchium
pruinosum
(Roadside Blue-eyed Grass)
Sisyrinchium
spp.
(blue-eyed grasses)
Sisyrinchium
striatum
(pale yellow-eyed grass)
Sium
spp.
Sium
suave
(water parsnip)
Sixalix
atropurpurea
(Sweet scabious)
Sixalix
spp.
Skimmia
japonica
(Japanese skimmia)
Skimmia
spp.
Smallanthus
spp.
Smallanthus
uvedalia
(bear's foot)
Smilacina
racemosa
(False Solomon's Seal)
Smilax
auriculata
(Earleaf Greenbrier)
Smilax
australis
(Austral Sarsaparilla)
Smilax
bona-nox
(saw greenbrier)
Smilax
glauca
(sawbrier)
Smilax
glyciphylla
(Sweet Sarsaparilla)
Smilax
herbacea
(smooth carrionflower)
Smilax
rotundifolia
(roundleaf greenbrier)
Smilax
smallii
(Lanceleaf Greenbrier)
Smilax
spp.
(greenbriers)
Smilax
tamnoides
(bristly greenbrier)
Smyrnium
olusatrum
(Alexanders)
Smyrnium
perfoliatum
(perfoliate alexanders)
Smyrnium
spp.
Solanum
americanum
(American black nightshade)
Solanum
aviculare
(New Zealand nightshade)
Solanum
carolinense
(Carolina horsenettle)
Solanum
chrysotrichum
(giant devil's-fig)
Solanum
crispum
'Glasnevin'
(Glasnevin Potato Vine)
Solanum
dimidiatum
(western horsenettle)
Solanum
douglasii
(greenspot nightshade)
Solanum
dulcamara
(bittersweet nightshade)
Solanum
elaeagnifolium
(silverleaf nightshade)
Solanum
emulans
(eastern black nightshade)
Solanum
laciniatum
(kangaroo-apple)
Solanum
lycopersicum
'Big Boy'
(Big Boy Tomato)
Solanum
lycopersicum
'Black Cherry'
(Black Cherry Tomato)
Solanum
lycopersicum
'Black Krim'
(Black Krim Tomato)
Solanum
lycopersicum
'Brandywine'
(Brandywine Tomato)
Solanum
lycopersicum
'Bush Early Girl'
(Bush Early Girl Tomato)
Solanum
lycopersicum
'Celebrity'
(Celebrity Tomato)
Solanum
lycopersicum
'Cherokee Purple'
(Cherokee Purple Tomato)
Solanum
lycopersicum
'Early Girl'
(Early Girl Tomato)
Solanum
lycopersicum
'Glacier'
(Glacier Tomato)
Solanum
lycopersicum
'Heatmaster'
(Heatmaster Tomato)
Solanum
lycopersicum
'Iron Lady'
(Iron Lady Tomato)
Solanum
lycopersicum
'Patio'
(Patio Tomato)
Solanum
lycopersicum
'Patio Princess'
(Patio Princess Tomato)
Solanum
lycopersicum
'Phoenix'
(Phoenix Tomato)
Solanum
lycopersicum
'Red Cherry'
(Red Cherry Tomato)
Solanum
lycopersicum
'Roma'
(Roma Tomato)
Solanum
lycopersicum
'San Marzano'
(San Marzano Tomato)
Solanum
lycopersicum
'Stupice'
(Stupice Tomato)
Solanum
lycopersicum
'Sungold'
(Sungold Cherry Tomato)
Solanum
lycopersicum
'Surefire Red'
(Surefire Red Tomato)
Solanum
lycopersicum
'Yellow Pear'
(Yellow Pear Tomato)
Solanum
mauritianum
(bugweed)
Solanum
melongena
'Black Beauty'
(Black Beauty Eggplant)
Solanum
melongena
'Ichiban'
(Ichiban Eggplant)
Solanum
melongena
'Rosa Bianca'
(Rosa Bianca Eggplant)
Solanum
nigrum
(black nightshade)
Solanum
parishii
(Parish's nightshade)
Solanum
physalifolium
(hairy nightshade)
Solanum
prinophyllum
(Forest Nightshade)
Solanum
pseudocapsicum
(Jerusalem cherry)
Solanum
rostratum
(buffalobur)
Solanum
seaforthianum
(Brazilian Nightshade)
Solanum
sisymbriifolium
(Red Buffalo-bur)
Solanum
spp.
(nightshades)
Solanum
stelligerum
(devil's needles)
Solanum
tuberosum
(potato)
Solanum
umbelliferum
(bluewitch nightshade)
Solanum
xanti
(purple nightshade)
Soldanella
spp.
Soldanella
villosa
(Hairy Snowbell)
Soleirolia
soleirolii
(Baby's tears)
Soleirolia
spp.
Solidago
altissima
(tall goldenrod)
Solidago
bicolor
(silverrod)
Solidago
caesia
(bluestem goldenrod)
Solidago
canadensis
(Canada goldenrod)
Solidago
flexicaulis
(broad-leaved goldenrod)
Solidago
gigantea
(giant goldenrod)
Solidago
juncea
(early goldenrod)
Solidago
lepida
(Canada goldenrod)
Solidago
'Loysder Crown'
(Loysder Crown Solidago)
Solidago
mexicana
(Southern Seaside Goldenrod)
Solidago
nemoralis
(field goldenrod)
Solidago
odora
(Sweet Goldenrod)
Solidago
rigida
(stiff-leaved goldenrod)
Solidago
rugosa
(Wrinkle-Leaved Goldenrod)
Solidago
rugosa
'Fireworks'
(Fireworks Goldenrod)
Solidago
sempervirens
(northern seaside goldenrod)
Solidago
spp.
(goldenrods)
Solidago
ulmifolia
(elm-leaved goldenrod)
Solidago
velutina
(velvety goldenrod)
Solidago
virgaurea
(European goldenrod)
Soliva
sessilis
(common soliva)
Soliva
spp.
Sonchus
arvensis
(marsh sow thistle)
Sonchus
asper
(prickly sow thistle)
Sonchus
fruticosus
(Shrubby Sow-thistle)
Sonchus
oleraceus
(annual sow thistle)
Sonchus
spp.
(sow thistles)
Sophora
japonica
(Japanese Pagoda Tree)
Sophora
spp.
(Necklacepods)
Sorbaria
sorbifolia
'Sem'
(False Spiraea)
Sorbaria
spp.
Sorbus
alnifolia
(Korean Mountain Ash)
Sorbus
americana
(American mountain ash)
Sorbus
aucuparia
(European mountain ash)
Sorbus
sitchensis
(Sitka Mountain Ash)
Sorbus
spp.
(Rowans and Mountain Ashes)
Sorghastrum
nutans
(Indiangrass)
Sorghastrum
spp.
Sorghum
bicolor
(Sorghums)
Sorghum
halepense
(Johnson grass)
Sorghum
spp.
(Johnsongrasses, milos, sudangrasses, and allies)
Sowerbaea
juncea
(Rush Lily)
Sowerbaea
laxiflora
(Purple Tassels)
Sowerbaea
spp.
Sparganium
erectum
(Branched Bur-reed)
Sparganium
spp.
(bur-reeds)
Spartina
alterniflora
(saltwater cordgrass)
Spartina
anglica
(English cordgrass)
Spartina
bakeri
(Sand Cordgrass)
Spartina
spp.
Spartium
junceum
(Spanish Broom)
Spartium
spp.
Spathiphyllum
spp.
(peace lillies)
Spathiphyllum
wallisii
(Peace Lily)
Spathoglottis
spp.
(Ground Orchids)
Spergula
arvensis
(Corn spurrey)
Spergularia
marina
(Saltmarsh Sand Spurry)
Spergularia
media
(Greater Sea-spurry)
Spergularia
rubra
(Red Sand Spurrey)
Spergularia
rupicola
(Rock Sea-spurrey)
Spergularia
spp.
(Sand-Spurries)
Spergula
spp.
Spermacoce
spp.
(False Buttonweeds)
Spermacoce
verticillata
(shrubby false buttonweed)
Sphaeralcea
ambigua
(apricot globemallow)
Sphaeralcea
coccinea
(Scarlet Globemallow)
Sphaeralcea
spp.
(globemallows)
Sphaerolobium
minus
(globe-pea)
Sphaerolobium
spp.
Sphaeropteris
cooperi
(Scaly Tree Fern)
Sphaeropteris
spp.
Sphagneticola
spp.
(creeping oxeye)
Sphagneticola
trilobata
(Trailing Daisy)
Sphagnum
capillifolium
(Northern Peatmoss)
Sphagnum
denticulatum
(Cow-horn Bog-moss)
Sphagnum
fallax
(Flat-top Bogmoss)
Sphagnum
palustre
(Prairie Peatmoss)
Sphagnum
spp.
(Sphagnum mosses)
Spigelia
marilandica
(Indian Pink)
Spigelia
spp.
Spinacia
spp.
(Spinach)
Spinifex
sericeus
(Beach Spinifex)
Spinifex
spp.
Spinulum
annotinum
(interrupted clubmoss)
Spinulum
spp.
Spiraea
alba
(white meadowsweet)
Spiraea
douglasii
(western spirea)
Spiraea
japonica
(Japanese Spirea)
Spiraea
japonica
'Goldflame'
(Goldflame spirea)
Spiraea
japonica
'Little Princess'
(Little Princess spirea)
Spiraea
lucida
(Shinyleaf Spiraea)
Spiraea
nipponica
'Snowmound'
(snowmound spirea)
Spiraea
splendens
(Subalpine Spiraea)
Spiraea
spp.
(meadowsweets)
Spiraea
thunbergii
(Thunberg spirea)
Spiraea
tomentosa
(Steeplebush)
Spiraea
×
vanhouttei
(Vanhoutte spirea)
Spiranthes
australis
(austral ladies'-tresses)
Spiranthes
spiralis
(Autumn Ladies' Tresses)
Spiranthes
spp.
(Ladies'-tresses)
Spiranthes
×
stellata
(Starry Ladies'-Tresses)
Spiranthes
vernalis
(Spring Ladies' Tresses)
Sporobolus
alterniflorus
(Saltmarsh Cordgrass)
Sporobolus
anglicus
(common cordgrass)
Sporobolus
heterolepis
(Prairie Dropseed)
Sporobolus
spp.
(dropseeds, cordgrasses, and sandreeds)
Sporobolus
wrightii
(Giant Sacaton)
Sprengelia
incarnata
(Pink Swamp Heath)
Sprengelia
spp.
Spyridium
globulosum
(basket bush)
Spyridium
parvifolium
(Australian dusty miller)
Spyridium
spp.
Stachys
bullata
(California Hedge Nettle)
Stachys
byzantina
(lamb's ears)
Stachys
chamissonis
(Coastal Hedge-nettle)
Stachys
floridana
(Florida Hedgenettle)
Stachys
officinalis
(wood betony)
Stachys
palustris
(Marsh Woundwort)
Stachys
rigida
(Rough Hedgenettle)
Stachys
spp.
(Hedgenettles)
Stachys
sylvatica
(hedge woundwort)
Stachytarpheta
spp.
(Porterweeds)
Stackhousia
monogyna
(Creamy Candles)
Stackhousia
spp.
Stackhousia
viminea
(Yellow Stackhousia)
Stanleya
pinnata
(Desert Prince's Plume)
Stanleya
spp.
Staphylea
spp.
Staphylea
trifolia
(American bladdernut)
Staurastrum
spp.
(Star desmids)
Stelis
spp.
(Leach Orchids)
Stellaria
alsine
(Bog Stitchwort)
Stellaria
aquatica
(Water Chickweed)
Stellaria
flaccida
(Forest Starwort)
Stellaria
graminea
(lesser stitchwort)
Stellaria
media
(chickweed)
Stellaria
pubera
(star chickweed)
Stellaria
pungens
(prickly starwort)
Stellaria
spp.
(chickweeds)
Stenanthera
conostephioides
(Flame Heath)
Stenanthera
pinifolia
(pine heath)
Stenanthera
spp.
Stenaria
nigricans
(diamond-flowers)
Stenaria
spp.
Stenocarpus
sinuatus
(Firewheel tree)
Stenocarpus
spp.
Stenocereus
spp.
(Pitayas)
Stenotaphrum
secundatum
(St. Augustine Grass)
Stenotaphrum
spp.
Stephania
japonica
(Tapevine)
Stephania
spp.
Stephanomeria
diegensis
(San Diego Wirelettuce)
Stephanomeria
pauciflora
(Brownplume Wirelettuce)
Stephanomeria
spp.
(Wirelettuces)
Stevia
rebaudiana
(Stevia)
Stevia
spp.
Stewartia
monadelpha
(tall stewartia)
Stewartia
pseudocamellia
(Japanese stewartia)
Stewartia
spp.
Sticherus
flabellatus
(Shiny fan fern)
Sticherus
spp.
Stillingia
spp.
Stillingia
texana
(Texas Stillingia)
Stipa
gigantea
(giant feather grass)
Stipa
spp.
(Needle Grasses)
Stipa
tenuissima
(Mexican Feather Grass)
Strelitzia
nicolai
(Giant Bird of Paradise)
Strelitzia
reginae
(Bird of Paradise)
Strelitzia
spp.
(Bird-of-paradise flowers)
Streptanthus
spp.
Streptanthus
tortuosus
(Mountain Jewelflower)
Streptocarpus
spp.
(African Primrose)
Streptopus
amplexifolius
(white twisted-stalk)
Streptopus
lanceolatus
(rose twisted-stalk)
Streptopus
spp.
Strobilanthes
spp.
(Coneflowers)
Stromanthe
spp.
(Stromanthe)
Strophostyles
helvola
(trailing fuzzy-bean)
Strophostyles
spp.
Struthiola
spp.
(capesprays)
Struthiopteris
spicant
(deer fern)
Struthiopteris
spp.
Stylidium
armeria
(Thrift-leaved Triggerplant)
Stylidium
graminifolium
(Grass Triggerplant)
Stylidium
spp.
(Triggerplants)
Stylosanthes
biflora
(sidebeak pencilflower)
Stylosanthes
spp.
Stypandra
glauca
(nodding blue lily)
Stypandra
spp.
Styphelia
ericoides
(Bearded Heath)
Styphelia
humifusa
(Cranberry Heath)
Styphelia
sieberi
(Prickly Beard-heath)
Styphelia
spp.
Styphnolobium
affine
(Eve's Necklacepod)
Styphnolobium
japonicum
(Japanese pagoda tree)
Styphnolobium
spp.
Styrax
japonicus
(Japanese snowdrop tree)
Styrax
obassia
(fragrant snowbell)
Styrax
spp.
Suaeda
australis
(Austral Seablite)
Suaeda
maritima
(Herbaceous Seepweed)
Suaeda
spp.
(Seepweeds)
Suaeda
vera
(Shrubby Seablite)
Succisa
pratensis
(Devil's-bit Scabious)
Succisa
spp.
Sutera
(Bacopa)
Swainsona
formosa
(Sturt's Desert Pea)
Swainsona
galegifolia
(Smooth Darling Pea)
Swainsona
lessertiifolia
(coast Swainson-pea)
Swainsona
spp.
Syagrus
romanzoffiana
(Queen Palm)
Syagrus
spp.
Symphoricarpos
albus
(snowberry)
Symphoricarpos
mollis
(Creeping Snowberry)
Symphoricarpos
occidentalis
(Western Snowberry)
Symphoricarpos
orbiculatus
(coralberry)
Symphoricarpos
rotundifolius
(Roundleaf Snowberry)
Symphoricarpos
spp.
(snowberries)
Symphyotrichum
chilense
(Pacific Aster)
Symphyotrichum
cordifolium
(Common Blue Wood Aster)
Symphyotrichum
divaricatum
(southern annual saltmarsh aster)
Symphyotrichum
drummondii
(Drummond's aster)
Symphyotrichum
ericoides
(white heath aster)
Symphyotrichum
laeve
(smooth blue aster)
Symphyotrichum
lanceolatum
(panicled aster)
Symphyotrichum
novae-angliae
(New England aster)
Symphyotrichum
novi-belgii
(New York aster)
Symphyotrichum
oblongifolium
(Aromatic Aster)
Symphyotrichum
patens
(late purple aster)
Symphyotrichum
pilosum
(hairy white oldfield aster)
Symphyotrichum
puniceum
(swamp aster)
Symphyotrichum
racemosum
(Small White Aster)
Symphyotrichum
shortii
(Short's aster)
Symphyotrichum
spathulatum
(Western Mountain Aster)
Symphyotrichum
spp.
(American asters)
Symphyotrichum
subspicatum
(Douglas' aster)
Symphytum
(comfrey)
Symphytum
grandiflorum
(Creeping Comfrey)
Symphytum
officinale
(common comfrey)
Symphytum
orientale
(Soft Comfrey)
Symphytum
tuberosum
(Tuberous Comfrey)
Symplocarpus
foetidus
(Eastern Skunk Cabbage)
Symplocarpus
spp.
Symplocos
spp.
Symplocos
tinctoria
(Sweetleaf)
Syncarpia
glomulifera
(Turpentine)
Syncarpia
spp.
Syngonium
podophyllum
(Arrowhead Plant)
Syngonium
spp.
(Arrow-head Vines)
Synoum
glandulosum
(scentless rosewood)
Synoum
spp.
Synsepalum
dulcificum
(Miracle Fruit)
Synsepalum
spp.
Syntrichia
montana
(Intermediate Screw-moss)
Syntrichia
ruraliformis
(Sand-hill Screw-moss)
Syntrichia
ruralis
(Star Moss)
Syntrichia
spp.
(Screw Mosses)
Syringa
meyeri
'Palibin'
(Dwarf Korean Lilac)
Syringa
pubescens
ssp.
patula
'Miss Kim'
(Miss Kim lilac)
Syringa
reticulata
(Japanese Tree Lilac)
Syringa
spp.
(Lilacs)
Syringa
vulgaris
(lilac, common lilac)
Syzygium
australe
(scrub cherry)
Syzygium
floribundum
(weeping lilli pilli)
Syzygium
oleosum
(Blue Lilly Pilly)
Syzygium
smithii
(Lilly Pilly)
Syzygium
spp.
(Waterberries)
Tabebuia
spp.
(Trumpet trees)
Tabernaemontana
pandacaqui
(Banana Bush)
Tabernaemontana
spp.
(Pinwheel Flowers)
Tacca
chantrieri
(Black Bat Flower)
Tacca
spp.
Tagetes
erecta
(Mexican Marigold)
Tagetes
minuta
(wild marigold)
Tagetes
patula
(French marigold)
Tagetes
spp.
(Marigolds)
Tamala
palustris
(swamp redbay)
Tamala
spp.
Tamarix
gallica
(French tamarisk)
Tamarix
ramosissima
(saltcedar)
Tamarix
spp.
(Tamarisks)
Tanacetum
camphoratum
(camphor tansy)
Tanacetum
parthenium
(feverfew)
Tanacetum
spp.
(tansies)
Tanacetum
vulgare
(common tansy)
Taraxacum
erythrospermum
(red-seeded dandelion)
Taraxacum
officinale
(Dandelion Greens)
Taraxacum
spp.
(dandelions)
Taraxia
ovata
(Sun Cup)
Taraxia
spp.
Tasmannia
insipida
(Brush Pepperbush)
Tasmannia
lanceolata
(Mountain Pepper)
Tasmannia
spp.
Taxodium
ascendens
(pondcypress)
Taxodium
distichum
(bald cypress)
Taxodium
spp.
(baldcypresses)
Taxus
baccata
(English yew)
Taxus
baccata
'Fastigiata'
(Irish Yew)
Taxus
baccata
'Fastigiata Aurea'
(Golden Irish Yew)
Taxus
baccata
'Repandens'
(Spreading English Yew)
Taxus
brevifolia
(Pacific yew)
Taxus
canadensis
(Canada yew)
Taxus
cuspidata
(Japanese yew)
Taxus
cuspidata
'Nana'
(Dwarf Japanese yew)
Taxus
×
media
'Hicksii'
(Hicks yew)
Taxus
spp.
(yews)
Tecoma
capensis
(Cape Honeysuckle)
Tecomaria
capensis
(Cape Honeysuckle)
Tecomaria
spp.
(Cape Honeysuckle)
Tecoma
spp.
(Trumpetbushes)
Tecoma
x
'Orange Jubilee'
(Orange Jubilee Tecoma)
Tectaria
spp.
(halberd ferns)
Tellima
grandiflora
(Fringecup)
Tellima
spp.
Telmatoblechnum
serrulatum
(toothed midsorus fern)
Telmatoblechnum
spp.
Telopea
speciosissima
(Waratah)
Telopea
spp.
Telopea
truncata
(Tasmanian Waratah)
Templetonia
retusa
(Cockies Tongue)
Templetonia
spp.
Tephrosia
spp.
(Hoarypeas)
Tephrosia
virginiana
(goat's rue)
Terminalia
catappa
(Sea Almond)
Terminalia
spp.
(Cluster-leafs)
Tetragonia
implexicoma
(bower spinach)
Tetragonia
spp.
(Seacorals)
Tetragonia
tetragonoides
(New Zealand Spinach)
Tetraneuris
linearifolia
(Fineleaf Four-nerved Daisy)
Tetraneuris
scaposa
(Stemmy Four-nerved Daisy)
Tetraneuris
spp.
(Four-nerved Daisies)
Tetrarrhena
juncea
(Forest Wire-grass)
Tetrarrhena
spp.
Tetrastigma
nitens
(Native Grape)
Tetrastigma
spp.
Tetratheca
ciliata
(Pink-bells)
Tetratheca
pilosa
(Hairy Pink-bells)
Tetratheca
spp.
Tetratheca
thymifolia
(Thyme Pink-bells)
Teucrium
canadense
(American germander)
Teucrium
chamaedrys
(Wall Germander)
Teucrium
fruticans
(Tree Germander)
Teucrium
scorodonia
(woodland germander)
Teucrium
spp.
(Woodsages)
Thalictrum
aquilegiifolium
(Columbine Meadow Rue)
Thalictrum
'Black Stockings'
(Black Stockings meadow rue)
Thalictrum
dasycarpum
(purple meadow-rue)
Thalictrum
delavayi
(Yunnan Meadow Rue)
Thalictrum
dioicum
(early meadow-rue)
Thalictrum
fendleri
(Torrey's Meadow-Rue)
Thalictrum
flavum
ssp.
glaucum
(Yellow Meadow Rue)
Thalictrum
minus
(Lesser Meadow-rue)
Thalictrum
occidentale
(Western Meadow-Rue)
Thalictrum
polycarpum
(Tall Meadow-rue)
Thalictrum
pubescens
(tall meadow-rue)
Thalictrum
spp.
(meadow-rues)
Thalictrum
thalictroides
(rue anemone)
Thamnobryum
alopecurum
(Fox-tail Feather-moss)
Thamnobryum
spp.
Thamnochortus
spp.
(Thatching Reeds)
Thaumatophyllum
bipinnatifidum
(Split-Leaf Philodendron)
Thaumatophyllum
spp.
(Tree Philodendrons)
Thelesperma
filifolium
(stiff greenthread)
Thelesperma
spp.
Thelionema
caespitosum
(Tufted Blue Lily)
Thelionema
spp.
Thelymitra
antennifera
(lemon-scented sun orchid)
Thelymitra
crinita
(Blue Lady Orchid)
Thelymitra
ixioides
(spotted sun-orchid)
Thelymitra
megacalyptra
(plains sun orchid)
Thelymitra
peniculata
(trim sun orchid)
Thelymitra
rubra
(salmon sun-orchid)
Thelymitra
spp.
(Sun Orchids)
Thelypteris
palustris
(marsh fern)
Thelypteris
spp.
Themeda
spp.
Themeda
triandra
(Kangaroo Grass)
Thermopsis
montana
(Mountain goldenbean)
Thermopsis
spp.
(Goldenbanners)
Thesium
spp.
(Rootthugs)
Thlaspi
arvense
(field penny-cress)
Thlaspi
spp.
Thomasia
petalocalyx
(paper flower)
Thomasia
spp.
Threlkeldia
diffusa
(Coast Bonefruit)
Threlkeldia
spp.
Thuidiopsis
sparsa
(Sparse Fern Moss)
Thuidiopsis
spp.
Thuidium
delicatulum
(delicate fern moss)
Thuidium
spp.
(fern mosses)
Thuidium
tamariscinum
(Common Tamarisk-moss)
Thuja
koraiensis
(Blue Korean Arborvitae)
Thuja
occidentalis
'Degroot'
s
Spire'
(Degroot's Spire Thuja)
Thuja
occidentalis
'Hetz Midget'
(Hetz Midget Arborvitae)
Thuja
occidentalis
'Smaragd'
(Emerald Green Arborvitae)
Thuja
plicata
(western red cedar)
Thuja
plicata
'Zebrina'
(golden western red cedar)
Thuja
×
soeegaardii
('Green Giant' arborvitae)
Thuja
spp.
(arborvitaes)
Thujopsis
dolabrata
(Japanese false arborvitae)
Thujopsis
dolabrata
'Variegata'
(variegated Japanese false arborvitae)
Thujopsis
spp.
Thunbergia
alata
(black-eyed Susan vine)
Thunbergia
grandiflora
(Sky Vine)
Thunbergia
spp.
(Clockvines)
Thymophylla
pentachaeta
(Parralena)
Thymophylla
spp.
(Pricklyleaves)
Thymus
×
citriodorus
(Lemon Thyme)
Thymus
praecox
(Mother of Thyme)
Thymus
praecox
'Coccineus'
(Red Creeping Thyme)
Thymus
pseudolanuginosus
(Woolly Thyme)
Thymus
serpyllum
(Wild Thyme)
Thymus
serpyllum
'Albus'
(White Creeping Thyme)
Thymus
serpyllum
'Elfin'
(Elfin Creeping Thyme)
Thymus
spp.
(Thymes)
Thymus
vulgaris
(Thyme)
Thysanocarpus
curvipes
(sand fringepod)
Thysanocarpus
spp.
Thysanotus
patersonii
(Twining Fringe-lily)
Thysanotus
spp.
Thysanotus
tuberosus
(Common Fringe-lily)
Tiarella
cordifolia
(Foamflower)
Tiarella
cordifolia
'Brandywine'
(Brandywine Foamflower)
Tiarella
cordifolia
'Oakleaf'
(Oakleaf Foamflower)
Tiarella
cordifolia
'Running Tapestry'
(Running Tapestry Foamflower)
Tiarella
spp.
(foamflowers)
Tiarella
stolonifera
(Creeping Foamflower)
Tiarella
trifoliata
(foamflower)
Tibouchina
spp.
(glory bushes and allies)
Tibouchina
urvilleana
(Tibouchina Princess Flower)
Tigridia
pavonia
(Mexican shell flower)
Tigridia
spp.
Tilia
americana
(basswood)
Tilia
cordata
(little‑leaf linden)
Tilia
europaea
(European Linden)
Tilia
platyphyllos
(Bigleaf Linden)
Tilia
spp.
(lindens, basswoods, and lime trees)
Tillandsia
fasciculata
(cardinal airplant)
Tillandsia
×
floridana
(Florida airplant)
Tillandsia
recurvata
(ballmoss)
Tillandsia
spp.
(Air Plant)
Tillandsia
usneoides
(Spanish moss)
Tillandsia
utriculata
(giant airplant)
Tinantia
anomala
(False dayflower)
Tinantia
spp.
Tipularia
discolor
(crane-fly orchid)
Tipularia
spp.
Tithonia
spp.
(Mexican Sunflowers)
Todea
barbara
(king fern)
Todea
spp.
Tolmiea
menziesii
(piggy-back plant)
Tolmiea
spp.
Toona
ciliata
(Australian Red Cedar)
Toona
spp.
Torenia
spp.
(wishbone flowers)
Torilis
arvensis
(common hedge parsley)
Torilis
japonica
(upright hedge-parsley)
Torilis
spp.
(hedge parslies)
Torminalis
glaberrima
(Wild Service-tree)
Torminalis
spp.
Tortula
muralis
(Wall Screw-moss)
Tortula
spp.
(Tortula mosses)
Toxicodendron
diversilobum
(Pacific poison oak)
Toxicodendron
radicans
(Poison Ivy)
Toxicodendron
rydbergii
(western poison ivy)
Toxicodendron
spp.
(poison ivies and oaks)
Toxicodendron
vernix
(poison sumac)
Toxicoscordion
fremontii
(Fremont's Death Camas)
Toxicoscordion
paniculatum
(foothill deathcamas)
Toxicoscordion
spp.
(Deathcamas)
Toxicoscordion
venenosum
(Meadow Deathcamas)
Trachelospermum
asiaticum
(Asiatic Jasmine)
Trachelospermum
jasminoides
(star jasmine)
Trachelospermum
spp.
(star jasmines)
Trachyandra
spp.
(Capespinachs)
Trachycarpus
fortunei
(windmill palm)
Trachycarpus
spp.
Trachymene
incisa
(Australian parsnip)
Trachymene
spp.
Trachystemon
orientalis
(giant borage)
Trachystemon
spp.
Tradescantia
fluminensis
(small-leaf spiderwort)
Tradescantia
occidentalis
(Western Spiderwort)
Tradescantia
ohiensis
(Ohio spiderwort)
Tradescantia
pallida
(Purple Heart)
Tradescantia
spathacea
(Moses-in-the-Cradle)
Tradescantia
spp.
(Spiderworts)
Tradescantia
subaspera
(Zigzag Spiderwort)
Tradescantia
virginiana
(Virginia spiderwort)
Tradescantia
zebrina
(Inch Plant)
Tragia
spp.
(noseburns)
Tragopogon
dubius
(Yellow Salsify)
Tragopogon
porrifolius
(purple salsify)
Tragopogon
pratensis
(meadow salsify)
Tragopogon
spp.
(Salsifies)
Trema
spp.
Trema
tomentosum
(Nettle Tree)
Trentepohlia
spp.
Triadica
sebifera
(Chinese Tallow)
Triadica
spp.
Tribulus
spp.
(Devil Thorns)
Tribulus
terrestris
(puncture vine)
Trichocereus
spp.
Trichodesma
spp.
Trichodesma
zeylanicum
(camel bush)
Trichomanes
spp.
Trichomanes
venosum
(veined bristle-fern)
Trichophorum
cespitosum
(Tufted Bulrush)
Trichophorum
spp.
Trichostema
dichotomum
(Blue Curls)
Trichostema
lanatum
(woolly bluecurls)
Trichostema
lanceolatum
(Vinegar Weed)
Trichostema
spp.
Tricoryne
elatior
(yellow rush-lily)
Tricoryne
spp.
Tridax
procumbens
(Tridax Daisy)
Tridax
spp.
Tridens
flavus
(purpletop tridens)
Tridens
spp.
Trifolium
angustifolium
(Narrow-leaved clover)
Trifolium
arvense
(rabbitfoot clover)
Trifolium
campestre
(hop trefoil)
Trifolium
dubium
(Lesser hop trefoil)
Trifolium
fragiferum
(Strawberry clover)
Trifolium
hirtum
(Rose Clover)
Trifolium
hybridum
(Alsike clover)
Trifolium
incarnatum
(crimson clover)
Trifolium
medium
(Zigzag Clover)
Trifolium
pratense
(red clover)
Trifolium
repens
(white clover)
Trifolium
spp.
(clovers)
Trifolium
willdenovii
(tomcat clover)
Triglochin
maritima
(common arrowgrass)
Triglochin
spp.
Trillium
catesbaei
(bashful wakerobin)
Trillium
cernuum
(nodding trillium)
Trillium
chloropetalum
(giant trillium)
Trillium
cuneatum
(Little Sweet Betsy)
Trillium
decipiens
(Deceptive Trillium)
Trillium
erectum
(red trillium)
Trillium
flexipes
(drooping trillium)
Trillium
grandiflorum
(large white trillium)
Trillium
kurabayashii
(giant purple wakerobin)
Trillium
luteum
(Yellow Trillium)
Trillium
ovatum
(western trillium)
Trillium
pusillum
(Dwarf Trillium)
Trillium
recurvatum
(Prairie Trillium)
Trillium
sessile
(toadshade)
Trillium
spp.
(trilliums)
Trillium
undulatum
(painted trillium)
Trimezia
spp.
(Walking Irises)
Triodanis
biflora
(Venus's looking-glass)
Triodanis
perfoliata
(clasping Venus's looking glass)
Triodanis
spp.
(Venus' Looking-Glasses)
Tripladenia
cunninghamii
(kreysigia)
Tripladenia
spp.
Tripleurospermum
inodorum
(scentless mayweed)
Tripleurospermum
maritimum
(Sea Mayweed)
Tripleurospermum
spp.
(Mayweeds)
Tripolium
pannonicum
(Sea Aster)
Tripolium
spp.
Tripsacum
dactyloides
(eastern gamagrass)
Tripsacum
spp.
Triquetrella
papillata
Triquetrella
spp.
Tristaniopsis
laurina
(Water Gum)
Tristaniopsis
spp.
Triteleia
grandiflora
(large-flowered triteleia)
Triteleia
hyacinthina
(White Brodiaea)
Triteleia
ixioides
(Prettyface)
Triteleia
laxa
(Ithuriel's Spear)
Triteleia
spp.
Triticum
aestivum
(Bread Wheat)
Triticum
spp.
Triumfetta
spp.
(Burweeds)
Trixis
californica
(American threefold)
Trixis
spp.
Trochocarpa
laurina
(Tree Heath)
Trochocarpa
spp.
Trochodendron
aralioides
(Wheel Tree)
Trochodendron
spp.
Trollius
spp.
(Globeflower)
Tropaeolum
majus
(garden nasturtium)
Tropaeolum
spp.
(Nasturtiums)
Tsuga
canadensis
(eastern hemlock)
Tsuga
canadensis
'Pendula'
(Weeping Canadian Hemlock)
Tsuga
heterophylla
(western hemlock)
Tsuga
mertensiana
(mountain hemlock)
Tsuga
spp.
(hemlocks)
Tulbaghia
spp.
(Wild Garlics)
Tulbaghia
violacea
(society garlic)
Tulipa
(tulips)
Tulipa
gesneriana
(Garden Tulip)
Tulipa
'Groenland'
(Viridiflora Tulip)
Tulipa
'Little Beauty'
(Dwarf Tulip)
Tulipa
praestans
(excellent tulip)
Tulipa
'Purple Prince'
(Single Early Tulip)
Tulipa
'Strong Gold'
(Triumph Tulip)
Turnera
spp.
(Turneras)
Turritis
glabra
(Tower Mustard)
Turritis
spp.
Tussilago
farfara
(colt's-foot)
Tussilago
spp.
Typha
angustifolia
(slender-leaved cattail)
Typha
domingensis
(southern cattail)
Typha
×
glauca
(hybrid cattail)
Typha
latifolia
(common cat-tail)
Typha
orientalis
(Oriental Cattail)
Typha
spp.
(Cattails)
Ulex
europaeus
(gorse)
Ulex
gallii
(Western Gorse)
Ulex
minor
(Dwarf Gorse)
Ulex
spp.
(Gorses)
Ulmus
alata
(Winged Elm)
Ulmus
americana
(American Elm)
Ulmus
americana
'Princeton'
(Princeton American Elm Tree)
Ulmus
crassifolia
(Cedar Elm)
Ulmus
×
elegantissima
'Jacqueline Hillier'
(Jacqueline Hillier Elm Tree)
Ulmus
'Frontier'
(Frontier Elm Tree)
Ulmus
glabra
'Camperdownii'
(Camperdown elm)
Ulmus
minor
(Field Elm)
Ulmus
parvifolia
(Lacebark Chinese Elm Tree)
Ulmus
procera
(English elm)
Ulmus
pumila
(Siberian elm)
Ulmus
rubra
(slippery elm)
Ulmus
spp.
(elms)
Ulota
crispa
(crisped pincushion)
Ulota
spp.
(Curl mosses)
Ulva
intestinalis
(Gutweed)
Ulva
lactuca
(Broadleaf Sea Lettuce)
Ulva
spp.
(Sea Lettuces)
Umbellularia
californica
(California bay)
Umbellularia
spp.
Umbilicus
rupestris
(Wall Pennywort)
Umbilicus
spp.
(Navelworts)
Ungnadia
speciosa
(Mexican buckeye)
Ungnadia
spp.
Uniola
paniculata
(sea oats)
Uniola
spp.
Urena
lobata
(Caesar weed)
Urena
spp.
Urera
spp.
(Urera)
Uropappus
lindleyi
(silverpuffs)
Uropappus
spp.
Ursinia
spp.
(Paraseeds)
Urtica
dioica
(stinging nettle)
Urtica
gracilis
(slender stinging nettle)
Urtica
incisa
(Scrub Nettle)
Urtica
spp.
(nettles)
Urtica
urens
(small nettle)
Utricularia
dichotoma
(fairy aprons)
Utricularia
×
neglecta
(Yellow bladderwort)
Utricularia
spp.
(Bladderworts)
Uvularia
grandiflora
(largeflower bellwort)
Uvularia
perfoliata
(Perfoliate Bellwort)
Uvularia
sessilifolia
(sessile bellwort)
Uvularia
spp.
Vaccinium
angustifolium
(lowbush blueberry)
Vaccinium
arboreum
(sparkleberry)
Vaccinium
corymbosum
(blueberry)
Vaccinium
elliottii
(mayberry)
Vaccinium
fuscatum
(Black Highbush Blueberry)
Vaccinium
macrocarpon
(American Cranberry)
Vaccinium
membranaceum
(Black Huckleberry)
Vaccinium
myrsinites
(Shiny blueberry)
Vaccinium
myrtillus
(common bilberry)
Vaccinium
ovalifolium
(Oval-leaf Huckleberry)
Vaccinium
ovatum
(evergreen huckleberry)
Vaccinium
oxycoccos
(bog cranberry)
Vaccinium
pallidum
(Early Lowbush Blueberry)
Vaccinium
parvifolium
(red huckleberry)
Vaccinium
spp.
(blueberries, cranberries, and allies)
Vaccinium
stamineum
(deerberry)
Vaccinium
uliginosum
(bog bilberry)
Vaccinium
vitis-idaea
(Lingonberry)
Vachellia
farnesiana
(Sweet acacia)
Vachellia
spp.
(thorn trees)
Valeriana
dioica
(Marsh Valerian)
Valeriana
officinalis
(common valerian)
Valeriana
sitchensis
(Sitka valerian)
Valeriana
spp.
(valerians)
Valerianella
locusta
(common cornsalad)
Valerianella
radiata
(beaked cornsalad)
Valerianella
spp.
(Cornsalads)
Vancouveria
hexandra
(inside-out flower)
Vancouveria
spp.
Vanilla
planifolia
(Vanilla Orchid)
Vanilla
spp.
Veratrum
californicum
(Corn Lily)
Veratrum
nigrum
(Black False Hellebore)
Veratrum
spp.
(false hellebores)
Veratrum
viride
(green false hellebore)
Verbascum
blattaria
(moth mullein)
Verbascum
bombyciferum
(white felted mullein)
Verbascum
chaixii
'Album'
(Nettle-leaved Mullein)
Verbascum
chaixii
'Wedding Candles'
(Wedding Candles Mullein)
Verbascum
nigrum
(Dark Mullein)
Verbascum
olympicum
(Olympic mullein)
Verbascum
phoeniceum
(purple verbascum)
Verbascum
×
'Plum Smokey'
(Plum Smokey Mullein)
Verbascum
roripifolium
(Watercress-Leaved Mullein)
Verbascum
'Southern Charm'
(Southern Charm verbascum)
Verbascum
spp.
(mulleins)
Verbascum
thapsus
(common mullein)
Verbascum
virgatum
(Wand Mullein)
Verbena
bonariensis
(tall verbena, Brazilian verbena)
Verbena
bracteata
(Bigbract Verbena)
Verbena
brasiliensis
(Brazilian Vervain)
Verbena
canadensis
'Homestead Purple'
(Verbena Purple Homestead)
Verbena
canescens
(Woolly Vervain)
Verbena
halei
(Texas vervain)
Verbena
hastata
(Blue Vervain)
Verbena
lasiostachys
(western vervain)
Verbena
officinalis
(Common vervain)
Verbena
rigida
(Rigid Verbena)
Verbena
spp.
(vervains)
Verbena
stricta
(hoary vervain)
Verbena
urticifolia
(white vervain)
Verbesina
alternifolia
(Wingstem)
Verbesina
encelioides
(cowpen daisy)
Verbesina
occidentalis
(Yellow Crownbeard)
Verbesina
spp.
(crownbeards)
Verbesina
virginica
(frostweed)
Vernonia
baldwinii
(Western Ironweed)
Vernonia
gigantea
(Tall Ironweed)
Vernonia
missurica
(Missouri Ironweed)
Vernonia
noveboracensis
(New York Ironweed)
Vernonia
spp.
(ironweeds)
Veronica
americana
(American brooklime)
Veronica
anagallis-aquatica
(blue water-speedwell)
Veronica
arvensis
(corn speedwell)
Veronica
beccabunga
(Brooklime)
Veronica
chamaedrys
(Germander Speedwell)
Veronica
filiformis
(Slender speedwell)
Veronica
×
franciscana
(Hedge Veronica)
Veronica
gracilis
(Slender Speedwell)
Veronica
hederifolia
(Ivy-leaved Speedwell)
Veronica
montana
(Wood Speedwell)
Veronica
odora
(boxleaf hebe)
Veronica
officinalis
(heath speedwell)
Veronica
peduncularis
'Georgia Blue'
(Georgia Blue Speedwell)
Veronica
peregrina
(Purslane Speedwell)
Veronica
persica
(bird's-eye speedwell)
Veronica
plebeia
(Australian Speedwell)
Veronica
polita
(Grey Field-speedwell)
Veronica
serpyllifolia
(thyme-leaved speedwell)
Veronica
speciosa
(New Zealand hebe)
Veronica
spicata
(veronica, speedwell)
Veronica
spicata
'Royal Candles'
(Royal Candles Speedwell)
Veronica
spp.
(speedwells)
Veronica
ssp.
(hebe)
Veronicastrum
spp.
Veronicastrum
virginicum
(culver's root)
Veronica
sublobata
(Pink Ivy-leaved Speedwell)
Veronica
×
'Tidal Pool'
(Tidal Pool Speedwell)
Veronica
topiaria
(Topiary Hebe)
Vertebrata
lanosa
(Wrack Siphon Weed)
Vertebrata
spp.
Viburnum
acerifolium
(mapleleaf viburnum)
Viburnum
×
bodnantense
'Dawn'
(Dawn viburnum)
Viburnum
×
burkwoodii
(Burkwood viburnum)
Viburnum
carlesii
(Korean spice viburnum)
Viburnum
×
carlocephalum
(fragrant snowball viburnum)
Viburnum
cassinoides
(northern wild raisin)
Viburnum
davidii
(David viburnum)
Viburnum
dentatum
(southern arrowwood)
Viburnum
dilatatum
(linden viburnum)
Viburnum
ellipticum
(Oval-leaf Viburnum)
Viburnum
lantana
(Wayfaring-tree)
Viburnum
lantanoides
(hobblebush)
Viburnum
lentago
(nannyberry)
Viburnum
opulus
'Nanum'
(dwarf European cranberry bush)
Viburnum
opulus
'Roseum'
(European cranberry bush)
Viburnum
opulus
var.
americanum
(American cranberry bush)
Viburnum
plicatum
(Japanese Snowball Bush)
Viburnum
plicatum
f.
tomentosum
(doublefile viburnum)
Viburnum
prunifolium
(Blackhaw)
Viburnum
recognitum
(northern arrowwood)
Viburnum
×
rhytidophylloides
(lantanaphyllum viburnum)
Viburnum
rhytidophyllum
(leatherleaf viburnum)
Viburnum
rufidulum
(Rusty Blackhaw)
Viburnum
spp.
(viburnums)
Viburnum
tinus
(Viburnum tinus)
Viburnum
x
burkwoodii
(Burkwood Viburnum)
Vicia
americana
(American vetch (native))
Vicia
caroliniana
(Carolina Vetch)
Vicia
cracca
(tufted vetch)
Vicia
hirsuta
(tiny vetch)
Vicia
ludoviciana
(slender vetch)
Vicia
sativa
(common vetch)
Vicia
sepium
(Bush Vetch)
Vicia
spp.
(Vetches)
Vicia
tetrasperma
(Lentil Vetch)
Vicia
villosa
(woolly vetch)
Vigna
luteola
(Wild Cowpea)
Vigna
spp.
(Cowpeas and relatives)
Viguiera
dentata
(Toothleaf Goldeneye)
Viguiera
spp.
(Goldeneyes)
Viminaria
juncea
(native broom)
Viminaria
spp.
Vinca
difformis
(Intermediate Periwinkle)
Vinca
major
(Greater Periwinkle)
Vinca
major
'Variegata'
(variegated vinca major)
Vinca
minor
(common periwinkle)
Vinca
spp.
(periwinkles)
Vincetoxicum
spp.
(dog-strangling vines)
Vinealobryum
insulanum
(Cylindric Beard-moss)
Vinealobryum
spp.
Viola
(Viola)
Viola
adunca
(Early Blue Violet)
Viola
arvensis
(European field pansy)
Viola
banksii
(Banks' Violet)
Viola
betonicifolia
(Mountain Violet)
Viola
blanda
(sweet white violet)
Viola
canadensis
(Canada Violet)
Viola
communis
(dooryard violet)
Viola
cucullata
(marsh blue violet)
Viola
eriocarpa
(Smooth Yellow Violet)
Viola
glabella
(Stream Violet)
Viola
hastata
(Halberd-leaved violet)
Viola
hederacea
(Ivy Leaved Violet)
Viola
hirta
(Hairy Violet)
Viola
labradorica
(Labrador violet)
Viola
lutea
(Mountain Pansy)
Viola
minuscula
(northern white violet)
Viola
missouriensis
(Missouri Violet)
Viola
odorata
(Sweet violet)
Viola
palmata
(three-lobed violet)
Viola
palustris
(Marsh Violet)
Viola
pedata
(bird's foot violet)
Viola
pedunculata
(California Golden Violet)
Viola
praemorsa
(Prairie Violet)
Viola
primulifolia
(primrose-leaved violet)
Viola
purpurea
(Goosefoot violet)
Viola
rafinesquei
(American field pansy)
Viola
reichenbachiana
(Early Dog-violet)
Viola
riviniana
(common dog-violet)
Viola
rostrata
(Long-spurred violet)
Viola
rotundifolia
(Round-leaved Violet)
Viola
sempervirens
(Evergreen Yellow Violet)
Viola
striata
(cream violet)
Viola
tricolor
(Wild Pansy)
Viola
×
williamsii
(Horned pansy)
Viola
×
wittrockiana
(pansy)
Viscum
album
(European mistletoe)
Viscum
spp.
Vitex
agnus-castus
(chaste tree)
Vitex
spp.
(Chastetrees)
Vitis
aestivalis
(summer grape)
Vitis
californica
(California wild grape)
Vitis
cinerea
(graybark grape)
Vitis
labrusca
(fox grape)
Vitis
mustangensis
(mustang grape)
Vitis
riparia
(riverbank grape)
Vitis
rotundifolia
(muscadine)
Vitis
spp.
(grapevines)
Vitis
vinifera
(grape)
Vitis
vulpina
(frost grape)
Vittadinia
cuneata
(Purple Fuzzweed)
Vittadinia
gracilis
(Purple Fuzzweed)
Vittadinia
spp.
Vriesea
spp.
(Vriesea)
Wahlenbergia
gracilis
(Australian Bluebell)
Wahlenbergia
spp.
(Capebells)
Wahlenbergia
stricta
(Australian bluebell)
Washingtonia
filifera
(California fan palm)
Washingtonia
robusta
(Mexican Fan Palm)
Washingtonia
spp.
(Fan Palms)
Watsonia
meriana
(Bulbil Bugle-lily)
Watsonia
spp.
(Watsonias)
Wedelia
hispida
(Texas creeping-oxeye)
Wedelia
spp.
Weigela
florida
(weigela)
Weigela
florida
'Variegata'
(variegated weigela)
Weigela
spp.
(Weigela bushes)
Westringia
eremicola
(slender westringia)
Westringia
fruticosa
(Coastal Rosemary)
Westringia
longifolia
(Long-leaf Westringia)
Westringia
spp.
Whipplea
modesta
(modesty)
Whipplea
spp.
Wikstroemia
indica
(Bootlace Plant)
Wikstroemia
spp.
Wilkiea
hugeliana
(Common Wilkiea)
Wilkiea
spp.
Wisteria
floribunda
(Japanese wisteria)
Wisteria
sinensis
(Chinese wisteria)
Wisteria
spp.
(wisterias)
Wodyetia
bifurcata
(Foxtail Palm Tree)
Wodyetia
spp.
Wollemia
nobilis
(Wollemi pine)
Wollemia
spp.
(Wollemi Pine)
Woodsia
obtusa
(blunt woodsia)
Woodsia
spp.
Woodwardia
areolata
(netted chain fern)
Woodwardia
fimbriata
(Giant Chain Fern)
Woodwardia
spp.
Woodwardia
virginica
(Virginia chainfern)
Woollsia
pungens
(Snow Wreath)
Woollsia
spp.
Wurmbea
dioica
(Early Nancy)
Wurmbea
spp.
Wyethia
amplexicaulis
(Northern Mule's Ear)
Wyethia
angustifolia
(Narrow Leaf Mule Ears)
Wyethia
mollis
(woolly mule's ears)
Wyethia
spp.
(mule's ears)
Xanthisma
spinulosum
(Spiny Goldenweed)
Xanthisma
spp.
Xanthium
spp.
(Cockleburs)
Xanthium
strumarium
(rough cocklebur)
Xanthocyparis
spp.
(Cypress)
Xanthorhiza
simplicissima
(Shrub Yellowroot)
Xanthorhiza
spp.
Xanthorrhoea
australis
(Austral Grass-tree)
Xanthorrhoea
glauca
(Queensland Grasstree)
Xanthorrhoea
johnsonii
(Forest Grasstree)
Xanthorrhoea
preissii
(Balga)
Xanthorrhoea
quadrangulata
(Yacka)
Xanthorrhoea
semiplana
(tufted grass-tree)
Xanthorrhoea
spp.
(Grasstrees)
Xanthosia
pilosa
(Woolly Xanthosia)
Xanthosia
spp.
Xanthosoma
spp.
(tannias)
Xanthostemon
chrysanthus
(Golden Penda)
Xanthostemon
spp.
Xerochrysum
bracteatum
(Golden Everlasting)
Xerochrysum
spp.
(strawflowers)
Xerochrysum
viscosum
(sticky everlasting)
Xerophyllum
spp.
Xerophyllum
tenax
(Beargrass)
Xylococcus
bicolor
(mission manzanita)
Xylococcus
spp.
Xylomelum
pyriforme
(Woody Pear)
Xylomelum
spp.
Xylorhiza
orcuttii
(Orcutt's Woodyaster)
Xylorhiza
spp.
Xylorhiza
tortifolia
(Mojave Woodyaster)
Xyris
spp.
(Yellow-eyed Grasses)
Youngia
japonica
(Oriental false hawksbeard)
Youngia
spp.
(Youngia)
Yucca
baccata
(Banana Yucca)
Yucca
brevifolia
(Western Joshua Tree)
Yucca
constricta
(Buckley's Yucca)
Yucca
elata
(soaptree yucca)
Yucca
filamentosa
(yucca)
Yucca
filamentosa
'Color Guard'
(Color Guard Yucca)
Yucca
glauca
(Great Plains yucca)
Yucca
gloriosa
var.
tristis
(weeping yucca)
Yucca
guatemalensis
(Spineless Yucca)
Yucca
jaegeriana
(Eastern Joshua tree)
Yucca
rupicola
(Twisted-leaf Yucca)
Yucca
schidigera
(Mojave Yucca)
Yucca
spp.
(Yuccas)
Yucca
treculiana
(Spanish dagger)
Zamia
furfuracea
(Cardboard Palm Tree)
Zamia
integrifolia
(Coontie Palm)
Zamia
spp.
Zamioculcas
spp.
(ZZ plant)
Zamioculcas
zamiifolia
(ZZ Plant)
Zamioculcas
zamiifolia
'Raven'
(Raven ZZ Plant)
Zamioculcas
zamiifolia
(variegated)
(Variegated ZZ Plant)
Zantedeschia
aethiopica
(White Calla Lily)
Zantedeschia
spp.
(calla lilies)
Zanthoxylum
americanum
(northern prickly ash)
Zanthoxylum
clava-herculis
(Hercules' club)
Zanthoxylum
spp.
(prickly-ashes)
Zelkova
serrata
(sawleaf zelkova)
Zelkova
spp.
Zeltnera
spp.
Zeltnera
venusta
(California Centaury)
Zephyranthes
atamasco
(Atamasco Lily)
Zephyranthes
chlorosolen
(Brazos rain-lily)
Zephyranthes
drummondii
(Drummond's rain lily)
Zephyranthes
spp.
(Rain lilies)
Zieria
smithii
(Sandfly Zieria)
Zieria
spp.
Zingiber
officinale
(Ginger)
Zingiber
spp.
Zinnia
elegans
(Elegant Zinnia)
Zinnia
spp.
(Zinnias)
Zizia
aurea
(Golden Alexanders)
Zizia
spp.
(Alexanders)
Ziziphus
spp.
(Jujubes)
Zoysia
japonica
(Zoysia Grass)
Zoysia
spp.
PlantRef
Study
Care
Tools
New
Daily Plant
Search
Sign In
Join
Sign Up
Sign Up Free
PlantRef
Sign In
Sign Up Free
Study
Care
Tools
New
Daily
Search
New
Plants
My Dashboard
Workspaces