Psilocybin mushrooms, also known as psychedelic mushrooms, are mushrooms that contain the psychedelic drugs psilocybin and psilocin. Common colloquial terms include magic mushrooms and 'shrooms. Biological genera containing psilocybin mushrooms include Copelandia, Galerina, Gymnopilus, Inocybe, Mycena, Panaeolus, Pholiotina, Pluteus, and Psilocybe. About 40 species are found in the genus Psilocybe. Psilocybe cubensis is the most common psilocybin mushroom in subtropical areas and the black market.