Field Identification

Cap1.5-4 cm, convex to broadly umbonate, hygrophanous, tan to pale caramel
GillsAdnate to sinuate, pale gray to dark purple-brown
Stem4-8 cm, whitish to pale, silky, hollow, bruises strongly blue
Spore PrintEllipsoid, 10-13 x 6-8 um, dark purple-brown spore print
HabitatMeadows, grasslands, and lightly forested areas in subtropical highlands
DistributionMexico (Oaxaca, Guerrero), Guatemala; cultivated worldwide as 'ATL7'
SeasonJune-October (rainy season)

Key Identification Feature

Mexican/Guatemalan grassland habitat; strong blueing; cultivated as ATL7 strain

⚠ Dangerous Lookalikes

Psilocybe mexicana (similar appearance; habitat overlap); Psilocybe aztecorum (higher altitude)

Notes

Cultivated commercially as the 'ATL7' strain. Named after the city of Atlanta where it was popularized in cultivation communities. The wild form is a highland Mexican species with significant potency. Strong blueing makes identification confirmation straightforward.

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.

All Wild Species