Panaeolus fimicola is a widespread but seldom identified "little brown mushroom" which sometimes contains small amounts of the hallucinogen psilocybin.

[1] The species is also referred to as the "turf mottlegill".

[5] Panaeolus fimicola can be found growing solitary to scattered in soil or dung, fertilized lawns and other grassy places, late spring to mid-fall.

It is widespread and common across the Americas, as well as Europe and Africa.

[6] Panaeolus fimicola will often appear during or after a cold rain.