psilocybin

A hallucinogenic compound, C₁₂H₁₇N₂O₄P, obtained from mushrooms chiefly of the genus Psilocybe.

A hallucinogenic alkaloid, C₁₂H₁₅N₂O·H₂PO₃, present in several species of Central American mushroom and producing effects similar to LSD.

a hallucinogenic compound obtained from a mushroom