Polypores (Basidiomycota) from Qin Mts. in Shaanxi Province, central China

133 species of polypores were identified based mostly on collections from Qin Mts. of southern Shaanxi Province, central China. A checklist of the polypores with substrate and collecting data is supplied. Two new species, Polyporus rhododendri Y.C. Dai & H.S. Yuan and Postia qinensis Y.C. Dai & Y.L. Wei, are described and illustrated. The former is an elegant species growing on Rhododendron, and it has almost sessile basidiocarps; microscopically it is characterized by fusiform, basidiospores. The latter is characterized by white, soft, resupinate to effused-reflexed basidiocarps, abundant gloeocystidia, cylindric to slightly allantoid basidiospores.