Genus
Polytrichum (Haircap mosses)
Polytrichum juniperinum. Photo: (c) Carlos G Velazco-Macias, some rights reserved (CC BY-NC)
Polytrichum is a genus of mosses — commonly called haircap moss or hair moss — which contains approximately 70 species that cover a cosmopolitan distribution. (Less common vernacular names include bird wheat and pigeon wheat.)
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