Antrodia taxa sp, nov. and Perenniporia celtis sp. nov, found growing sapro
trophically on the decayed stems of Taxus mairei and Celtis sinensis, respe
ctively, in Taiwan, are described and illustrated. A. taxa is distinguished
by effused-reflexed to pileate basidiomes and small oblong ellipsoid basid
iospores 4 x 2.5 mu m. P. celtis is characterized by large, subglobose to t
ear-shaped, non-truncate basidiospores 8.5-10 x 5-7 mu m and encrusted cyst
idia. Cultural characteristics are described for the two species.