Field Identification

Cap3-10cm, convex to plane, reddish-brown to chestnut, viscid, umbo sometimes present
GillsAdnate, pale clay to violaceous-brown, broad
Stem5-12cm x 5-12mm, whitish to pale brown, solid, stout
Spore PrintDark violaceous-brown, subellipsoid, 8-11 x 5.5-7 µm
HabitatSubtropical forests on rich humous soils and rotting wood; often found near streams in cloud forest
DistributionMexico (Oaxaca, Chiapas, Guerrero), Guatemala, Colombia, Brazil, Argentina
SeasonMay through October (rainy season)

Key Identification Feature

Large size for the genus; Oaxacan forest habitat; traditional ceremonial use by Zapotec people

⚠ Dangerous Lookalikes

Psilocybe cubensis (similar habitat in some regions; cubensis has thicker veil remnants); Stropharia coronilla (no bluing)

Notes

Used ceremonially by Zapotec people of Oaxaca, Mexico. One of the larger Psilocybe species. Less well-studied than P. mexicana or P. cubensis. Found at higher elevations (1000-2500m) in cloud forest habitats. Potency moderate to high.

Legal Status Warning Psilocybin-containing mushrooms are controlled substances in most jurisdictions. This guide is for educational purposes only. Wild foraging for psilocybin mushrooms may be illegal in your location. Never consume wild mushrooms without positive identification from an expert mycologist — misidentification can be fatal.

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