
Europe and North America. Common on willow stumps.
Saprotrophic on dead willow and poplar wood.
Summer to autumn.
Psilocybin
Psilocybin causes mild to moderate hallucinogenic effects. Greyish-blue bruising indicates psilocybin content.
Contains psilocybin and psilocin. Produces mild visual enhancement, color intensification, and altered perception. Effects are generally weaker than Psilocybe species.