A genus of mosses in which the stems are short and dichotomously branched, usually forming dense cushions. The leaves typically end in a fine, silvery hair-point, giving the cushions a hoary appearance. It is a cosmopolitan genus of about 170 species; almost entirely saxicolous. G. pulvinata forms hemispherical cushions on walls and roofs throughout lowland Britain. The capsules are borne on setae, which are initially strongly curved, but later straighten.
Subjects: Plant Sciences and Forestry.