Oct 21,2000. Kanzaki county, Hyogo prefecture

There is a posibility that this specimen can be B. Griseus Frost var. fuscus Hongo.

Var. fuscus's spore size is 11-16*4-5.5 micrometer according to the literature.

It is larger than var. griseus's. Var. fuscus has darker color than var. griseus.