New synonyms and typifications in Chionoloma tenuirostre (Pottiaceae, Bryophyta)

Names within Chionoloma tenuirostre are evaluated for proper taxonomic position. A total of 20 names are treated as synonyms, among them, 10 are here synonymised for the first time ( Hyophila acutiuscula , Leptodontium subintegrum , Oxystegus cylindricus var. filifer , Trichostomum angustifolium , T. fallax , T. fallax f. minutum , T. fragilifolium , T. prionodon , T. siamense and T. uncinifolium ) and three names are excluded from the synonymy ( Barbula wollei , Tortula cylindrotheca and Trichostomum burmense ). In order to maintain nomenclatural stability, the typification of 12 names is discussed and lectotypes are designated.