Filibryum (Hypnaceae), a new moss genus with a new species from East Asia

Filibryum, a new genusof the family Hypnaceae, is described to include three species from East Asia. Filibryum ogatae and F. yakoushimae are transferred to it from the genusGlossadelphus, while F. deguchianum is a newly described species. The genusis distinguished by the absence of a central strand in the stem, prorate leaf cells, and heteroblastic and deciduousstem leaves. Molecular data suggest that the genusis closely related to Taxiphyllumand the phylogenetic position of the new genusin the Hypnaceaeis supported by an approximately unbiased (AU) test.