Psilocybe caeruleoannulata

Psilocybe caeruleoannulata is a species of psilocybin mushroom found in Uruguay and Brazil, where it grows on marshy grounds, grasslands, or pastures. It is the most common Psilocybe species in the Floresta Nacional de São Francisco de Paula, in Rio Grande do Sul, Brazil. Media related to Psilocybe caeruleoannulata at Wikimedia Commons