Psilocybe weraroa is a secotioid fungus in the family Hymenogastraceae. It is native to New Zealand, where it grows in the forests from rotting wood and woody debris. Despite its pouch like form this species is closely related to Psilocybe cyanescens and Psilocybe subaeruginosa. As a bluing member of the genus Psilocybe it contains the psychoactive compounds psilocin and psilocybin.
It grows solitary to crowded on decaying wood buried in leaf litter, often on the rotting branches. It has also been found fruiting on rotted cabbage trees and decaying fern trees. Fairly abundant in the early winter and spring months. The mushroom can be difficult to see, often buried under leaves or eaten by slugs, and its sometimes hard to find mature specimens that are not partially eaten.

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