Psilocybe
A genus of mushrooms, of which many species contain the psychedelic compound psilocybin, including P. cubensis (Cubes), P. semilanceata (Liberty Caps)
Many mushrooms of the genus Psilocybe are hallucinogenic.
Psilocybe
The mushroom Psilocybe mexicana, which contains a hallucinogenic compound, C^12 H^17 N^2O4 P