Panaeolus olivaceus is a widely distributed, seldom identified, little brown mushroom that contains the hallucinogen psilocybin; it is often mistaken for Panaeolus foenisecii and is distinguished by its black spore print and darker gill coloration when mature alongside a slightly thicker stem.
Panaeolus olivaceus is a mushroom that is widely distributed but rarely identified; it contains psilocybin and is often mistaken for Panaeolus foenisecii. It can be distinguished by its black spore print, darker gill coloration when mature, and a slightly thicker stem.