CHANGBAI WOOD-ROTTING FUNGI .6. STUDY ON ANTRODIELLA, 2 NEW SPECIES AND NOTES ON SOME OTHER SPECIES

Two new saprotrophic polypores (Basidiomycetes), Antrodiella albocinna momea Y.C. Dai & Niemela and A; ussurii Y.C. Dai & Niemela are describ ed and illustrated. Both species were found in Changbai Mts., northeas tern China and the Russian Far East. The former species is characteriz ed by resupinate basidiocarps, white or cinnamon pores, clavate to pyr iform cystidia and fairly big spores, and by its growth mostly on Acer and Tilia. The latter species has resinous basidiocarps which are mos tly pileate, tan to pale brown; spores are small, oblong-ellipsoid. Un like in most other species of the genus, the skeletal hyphae bear a di stinct lumen. Two collections are identified as Antrodiella cf. americ ana Ryvarden & Gilb.; they are very similar to the type, but have some differences on skeletals and spores. A. citrinella Niemela & Ryvarden was found in China; this is the first record outside Europe. A. gypse a (Yasuda) T. Hattori & Ryvarden is fairly common in Northeast Asia. S ubulate cystidia and very narrow skeletal hyphae distinguish it from t he other species of the genus. The Changbai material of A. semisupina (Berk. & M.A. Curtis) Ryvarden has broad ellipsoid spores. This fits w ith reports and collections from central Europe, while the spores are narrower, suballantoid in North European collections.