Taxonomy and distribution of Pachyneuropsis (Pottiaceae, Bryophyta).

A revision of the Asiatic genus Pachyneuropsis H.A.Mill. (Pottiaceae, Bryophyta) recognizes two species, Pachyneuropsis bartlettii (E.B.Bartram) H.A.Mill. and P. perinvolutum (Tixier) comb. nov. Two names (Trichostomum hattorianum B.C.Tan & Z.Iwats. and Pachyneuropsis miyagii T.Yamag.) are synonymized with P. perinvolutum, and lectotypes are designated, for T. hattorianum and T. perinvolutum. Two keys (genus and species levels), descriptions, illustrations and distribution data are provided. Diagnostic characters for each species and closely related taxa are discussed. [ABSTRACT FROM AUTHOR]