|gills on hymenium|
|cap is conical or convex|
|hymenium is adnate or adnexed|
|stipe is bare|
|spore print is purple-brown|
|ecology is saprotrophic|
Psilocybe subaeruginascens is a psychedelic mushroom which has psilocybin and psilocin as main active compounds. This mushroom is closely related to Psilocybe subfimetaria and Psilocybe stuntzii.
Psilocybe subaeruginascens grows in gregariously and in cespitose clusters in wood chips, piles of leaves, and woody debris in urban areas and along trails and roads in deciduous forests and gardens. It is occasionally found in dung. It is found from April to July in southern Japan and subtropical Java and in Kwazulu-Natal South Africa where it occurs in February and March. A similar species, Psilocybe ovoideocystidiata has been reported from the Bay Area of California.