Verticillatus
/ver-tis-ih-LAH-tus/Also known as: verticillata, verticillatum
A morphological epithet describing leaves, flowers, or branches arranged in whorls — three or more organs radiating from the same point on the stem in a ring. Whorled arrangements create a very distinctive, structured appearance. Appears as verticillatus (masculine), verticillata (feminine), or verticillatum (neuter).
Etymology
From Latin verticillatus, meaning "whorled," from verticillus (a whorl, spindle-whorl), diminutive of vertex (a turning point, crown).
Example
“Galium verticillatum and Lilium martagon — whose leaves are arranged in whorls around the stem — both display the circular, radiating arrangement the epithet describes, creating a structured, layered quality quite different from alternate or opposite-leaved plants.”