摘要
pilotrichaceae is represented in rio de janeiro state by 35 species and 11 genera. this work is part of a larger study on the family in the state, and presents a taxonomic treatment of 18 species in the genera brymela crosby %26 b.h. allen, callicostella (m邦ll. hal.) mitt., crossomitrium m邦ll. hal., cyclodictyon mitt., hookeriopsis (besch.) a. jaeger, hypnella (m邦ll. hal.) a. jaeger and trachyxiphium w.r. buck. descriptions, illustrations, comments, distribution, and conservation status for each species are presented.