Synopsis of Anomobryum and Bryum (Bryaceae, Bryophyta) in Brazil

Abstract

Bryaceae is a species-rich moss family comprising ten genera and 660 species, with four genera and 54 species occurring in Brazil. Bryum is the largest genus, with 440 cosmopolitan species, while Anomobryum comprises 47 cosmopolitan species. Identifying taxa in Bryaceae is usually a difficult task, mainly due to the lack of the sporophyte in herborized specimens. This study aimed to provide a taxonomic treatment for the species of Anomobryum and Bryum in Brazil. Field expeditions were performed in all Brazilian biomes and States, with specimens deposited in the SP herbarium. We examined type specimens and collections from national and international herbaria, but mostly from the SP herbarium. Two species of Anomobryum and 18 species of Bryum were recorded for Brazil. Twenty species occur in the Atlantic Forest, with Bryum pallescens, Anomobryum conicum and A. julaceum being exclusives. Bryum pallescens is a new record for Brazil, and B. riparioides is a reestablished name also endemic to Brazil. We present the first description of the sexuality of Bryum renauldii. Ten taxa of doubtful occurrence and 20 excluded names for Bryum were reported for Brazil.