Psilocybe semilanceata Psilocybin mushrooms, usually known as magic mushrooms or shrooms, are a polyphyletic casual group of fungi that have psilocybin, which turns into psilocin on ingestion.Proof likely back as far as the 1500s suggests that pre-Columbian civilizations made use of Psilocybe species. Allegedly, they utilised these species for medi