Psilocybe stuntzii, also known as Stuntz's Blue legs and Blue Ringers it is a psilocybin mushroom of the Hymenogastraceae family, having psilocybin and psilocin as main active compounds. It is in the section Stuntzae, other members of the section include Psilocybe caeruleoannulata, Psilocybe meridionalis, Psilocybe mescaleroensis, Psilocybe ovoideocystidiata, Psilocybe rostrata, Psilocybe subaeruginascens, Psilocybe subaeruginascens var. septentrionbalis and Psilocybe uruguayensis.