Campylopus introflexus (Heath Star-moss)

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Campylopus spp.

swan-necked mosses

Leucobryaceae

Worldwide (acidic ground; many tropical and Southern Hemisphere)

Native to North America

SunFull Sun – Part Shade

WaterMedium

Overview

Campylopus spp. is a genus of tufted mosses in the family Leucobryaceae, growing on acidic soil, peat, rock, rotting wood, and heathland across much of the world, with many species in the tropics and Southern Hemisphere. The plants form dense cushions or turfs 0.4-4 inches (1-10 cm) deep, green to yellow-green above and often brown and felted with rhizoids below. The narrow leaves taper to a long point, frequently ending in a pale, toothed, hair-like tip, and a broad pale midrib fills much of the leaf. When dry, the shoots take on a stiff, sometimes silvery look. The genus name, meaning bent foot, refers to the curved spore stalk that gives several species the name swan-necked moss. Some species, such as C. introflexus, are aggressive colonisers that have spread far beyond their native range and can carpet heathland, dunes, and disturbed ground, crowding out other low plants. Campylopus spp. spreads readily by detached shoot tips and brittle leaves as well as by spores. The genus favours open, acidic, often disturbed or burnt ground and tolerates drought by drying to a pale tone and reviving when wetted.

Native Range

Campylopus spp. is widespread worldwide, with many species in the tropics, Southern Hemisphere, and temperate regions, growing on acidic soil, peat, rock, rotting wood, and heathland. Several species favour open, disturbed, or burnt acidic ground, and some have spread as introductions.

Suggested Uses

Campylopus spp. species are grown in moss gardens, terraria, and bonsai for dense acidic-ground cushions, and pioneer species colonise bare peat and burnt heath. The genus is studied as an example of invasive bryophyte spread, especially C. introflexus. Cushions are used in moss craft and naturalistic plantings on acidic substrates.

How to Identify

Identify by the dense green to yellow-green cushions or turfs with narrow leaves that taper to a long point, often ending in a pale toothed hair-tip, and a broad pale midrib filling much of the leaf, with brown felted rhizoids below. The curved spore stalk gives the swan-necked name. Microscopic leaf cross-sections separate the many species.

Appearance

Colors

Foliage Colors

green

yellow green

Bloom Information

Mosses do not flower. Campylopus spp. reproduces by spores from capsules raised on curved stalks, but spreads largely by vegetative means, with brittle leaves and detached shoot tips rooting to form new plants. Spore production varies by species and season.

Growing Conditions

Sun Requirements

SunFull Sun SunPartial Shade

• Full Sun: 6+ hours of direct sunlight

• Partial Shade: 3-6 hours of direct sunlight

• Full Shade: Less than 3 hours of direct sunlight

Water & Climate

Water Needs

Medium

Care & Maintenance

Care Guide

Campylopus spp. grows on acidic soil, peat, rock, and rotting wood in open to lightly shaded sites, tolerating drought by drying out and reviving when rewetted. It favours bare, acidic, often disturbed or burnt ground and is absent from limy ground. The genus is grown in moss gardens, terraria, and bonsai on acidic, low-nutrient substrates with good light. Introduced species such as C. introflexus spread on their own and can dominate heath and dune. Alkaline soil and deep shade reduce it.