Gymnopilus luteus
Gymnopilus luteus also called the "Yellow Gymnopilus" is a widely distributed mushroom of the Eastern United States, it contains the hallucinogens psilocybin and psilocin. Often mistaken for "Gymnopilus speciosissimus" and "Gymnopilus subspectabilis". Description. It is considered inedible due to the bitter taste and presence of the hallucinogenic drugs psilocybin and psilocin. Habitat and formation. Gymnopilus luteus is found growing solitary to gregariously or in small clusters on dead hardwood trees, June–November, widely distributed in eastern United States and Canada. See also. List of "Gymnopilus" species