Psilocybe aztecorum
A small psilocybin mushroom of high-altitude pine forest and alpine meadow on the volcanoes of central Mexico, where it has long been used ceremonially. It decays woody debris and pine cones in cold, wet summers and is rarely cultivated. Psilocybin is a controlled substance in most countries, and growing this mushroom is illegal in many places; check local law before cultivating.
Where it grows wild
A saprotroph on buried woody debris, twigs, rotting logs and pine cones in open Hartweg's pine woodland and high grassy meadows with Festuca and Muhlenbergia. It fruits in groups in the rainy season.
A high-mountain species of 2000–4000 m; the 14 records with an elevation have a median of 2968 m. Low-elevation records from the United States and Canada are likely misidentified or introduced.
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Profiles are drafts built from measured range and climate and from published sources; each section carries its own confidence in the app. Photo from Wikimedia Commons, used under its CC BY-SA 3.0 licence, unmodified.