1997 Volume 82 Pages 305-320
A total of 57 genera and 109 species of mosses are reported based on collections made from the 1995 expedition to Yushu Prefecture of Qinghai province. Didymodon gaochienii and Orthomitrium schofieldii are described new to science. Encalypta intermedia, Hygrohypnum polare and Leptopterygynandrum austro-alpinum are three moss records that have not previously been reported from China. Significant range extensions are reported for Amblyodon dealbatum, Conardia compacta, Distichium hagenii, Grimmia anodon, Leptopterygynandrum subintegrum, Oedipodium griffithianum, Orthotrichum pumilum, Philonotis calcarea, Plagiobryum demissum and Pylaisiella falcata. In addition, four new synonyms are proposed with their respective accepted names placed inside brackets: Aloina rubripila Aziz & Vohra [=Aloina rigida var. obliquifolia (C. Muell.) Delgad.], Barbula anserino-capitata X.-J. Li [=Didymodon johansenii (Williams) Zand.], Barbula longicostata X-J. Li [=Didymodon constrictus var. flexicaulis (Chen) Saito] and Tortula longimucronata X.-J. Li [=Syntrichia ruralis (Hedw.) Web. & Mohr].