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Psilocybe aztecorum

Common name: Aztec Psilocybe

Field Identification

Cap1.5-4 cm, convex to broadly campanulate, hygrophanous, brown to ochre-tan
GillsAdnate to sinuate, pale gray to dark purple-brown, moderately close
Stem4-9 cm, whitish to pale brown, somewhat fibrous, bruises blue
Spore PrintEllipsoid, 10-13 x 6-7.5 um, dark purple-brown spore print
HabitatGrassy areas, forest clearings at high altitude, on woody debris and soil
DistributionCentral Mexico highlands — Popocatepetl, Iztaccihuatl, Valley of Mexico
SeasonJuly-October (highland rainy season)

Key Identification Feature

High altitude central Mexico; open grassy highland habitat; Aztec cultural association

⚠ Dangerous Lookalikes

Psilocybe mexicana (lower elevation, dung habitat); Psilocybe semilanceata (Europe/N.America)

Notes

Associated with Aztec ceremonial use of teonanacatl. One of the species described in early 16th-century Spanish colonial records of indigenous sacred mushrooms. High-altitude distribution distinguishes it from most Mexican Psilocybe species.

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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