Taiga Kasuya* & Takahito Kobayashi**

*Laboratory of Plant Parasitic Mycology, Graduate School of Life and
Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8572, Japan
**Hokkaido University Museum, North 10 West 8, Kita-ku, Sapporo,
Hokkaido 060-0810, Japan

Kasuya T. & Kobayashi T. (2011) Revision of some Japanese Crepidotus: A new species, a new record and type studies of two species described by Sanshi Imai. – Sydowia 63 (2): 183–201.

Crepidotus byssinus is described as new from warm-temperate area of eastern Japan. It is placed in the subgenus Dochmiopus, section Dochmiopus, series Caspari and is morphologically similar to C. caspari var. caspari. Crepidotus calolepis var. calolepis is reported as a new record from warm-temperate broad-leaved forests of Honshu, central Japan. Type specimens of C. badiofloccosus and C. longistriatus, both originally described from Hokkaido, northern Japan, were reexamined. Based on the morphological features, C. badiofloccosus is confirmed as a synonym of C. crocophyllus. Crepidotus longistriatus, a morphologically poorly known species, is revealed as the distinct species belonging to the subgenus Dochmiopus, section Sphareuli, series Applanatus. Descriptions, illustrations and discussions of these species are provided.
Keywords: Cortinariaceae, mycobiota, new synonymy, wood-inhabiting fungi.