Psilocybe azurescens is a
psychedelic mushroom whose main active compounds are
psilocybin and
psilocin. It is among the most potent of the tryptamine-bearing mushrooms, containing up to 1.8% psilocybin, 0.5% psilocin, and 0.4%
baeocystin by dry weight, averaging to about 1.1% psilocybin and 0.15% psilocin, makes it one of the strongest mushrooms in
psilocybe genus. It belongs to the family
Hymenogastraceae in the order
Agaricales. In one study
Psilocybe subaeruginosa (Cleland) collected in Victoria, Australia had up to 1.93% PSOP. Perkal 1981, which would indicate that
Psilocybe subaeruginosa could be even more potent than its close cousin depending on where it is collected and the strain.