The polypore genera Abundisporus and Perenniporia (Basidiomycota) in China, with notes on Haploporus.

The species of Abundisporus Ryvarden and Perenniporia Murrill (Aphyllophorales, Basidiomycota) from China are listed. A key was prepared for the 24 species so far recorded in the two genera from the country, including condensed descriptions and spore dimensions.. Two new species are described and illustrated: Abundisporus quercicola Y.C.Dai and Perenniporia piceicola YC.Dai. The genera Haploporus Singer and Pachykytospora Kotl. & Pouzar are considered as synonymous, being closely related to Perenniporia but differing from it by ornamented spores. The following new combinations are proposed: Haploporus alabamae (Berk. & Cooke) Y.C.Dai & Niemela Haploporus papyraceus (Schwein.) Y.C.Dai & Niemeld, Haploporus subtrameteus (Pilat) Y.C.Dai & Niemeld, Haploporus tuberculosus (Fr.) Niemeld & Y.C.Dai, and Perenniporia subadusta (Z.S.Bi & G.Y.Zheng) Y.C.Dai.