hair moss
hair moss The common name for the moss Polytrichum commune. It is one of the largest British mosses, being 15–20 cm (exceptionally 40 cm) tall. Leaves may be 1 cm or more in length, with fine points, glossy sheathing bases, and toothed margins (visible with a hand lens). The capsule is sharply 4-angled. The common name derives from the golden, hairy calyptra, which is very conspicuous. Hair moss is common on damp heathland, moorland, and on mountains where the soil is acid; it often forms conspicuous mounds.
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hair moss
