Wild Species Bluing ✓ Potency: ★★☆☆☆

Psilocybe mexicana

Common name: Teonanácatl (historical Mazatec name)

Field Identification

Cap1–2cm; conical to campanulate (bell-shaped); brown to gray-brown; umbo present; margin with translucent striations when moist
GillsAdnate; cream-brown, darkening with spore maturity
Stem4–12cm; flexible; brown, often with fibrous threads
Spore PrintDark purple-brown
HabitatSubtropical grasslands, moss-covered roadsides, meadows with cattle; Central Mexico (Oaxaca, Veracruz)
DistributionMexico (primarily); some Central American reports
SeasonJune–September (rainy season)

Key Identification Feature

Small size, Oaxacan grassland habitat, and the formation of sclerotia (truffles) underground. The truffles are what remains legal in Netherlands under the name 'philosopher's stones.'

⚠ Dangerous Lookalikes

Various small brown mushrooms (LBMs) in the same habitat; requires spore print and habitat context for reliable identification

Notes

Albert Hofmann first isolated psilocybin and psilocin from this species in 1958, working with specimens collected during the famous Gordon Wasson expedition. It is also the species that produces 'philosopher's stones' (sclerotia) — the form legally sold in the Netherlands.

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