Wild Species Potency: ★★★☆☆

Panaeolus cambodginiensis

Common name: Cambodian Panaeolus

Field Identification

Cap1.5–3cm; convex to broadly convex; gray-brown to buff when moist, pale gray when dry; smooth surface
GillsAdnate; gray becoming jet black with spore maturity; mottled appearance from uneven spore development
Stem8–15cm tall; slender, stiff; pale gray to whitish; fine white fibrils on lower portion
Spore PrintJet black
HabitatDung of water buffalo, cattle, and horses; tropical and subtropical grasslands and paddocks
DistributionSoutheast Asia (Cambodia, Vietnam, Thailand, Philippines), tropical regions globally
SeasonYear-round in tropical climates; peak during rainy season

Key Identification Feature

The mottled gill pattern (irregular black from uneven spore ripening) is the primary Panaeolus identifier. Unlike Psilocybe, the spore print is jet black rather than purple-brown. Grows exclusively on dung, not soil or wood.

⚠ Dangerous Lookalikes

Non-active Panaeolus species (papilionaceus, antillarum); Coprinus/Coprinoid species (ink caps, which autodigest)

Notes

Panaeolus cambodginiensis is significant in the mycology of psychedelic mushrooms because it lacks the characteristic blue bruising reaction that most foragers and growers use as a potency indicator. Despite containing psilocybin, the enzymatic pathway that produces the bluing reaction appears to be absent or limited. This makes field identification more challenging than with Psilocybe species. The jet black spore print (compared to purple-brown in Psilocybe) and mottled gill pattern are the reliable identifiers. The species grows in the same tropical dung habitats as P. cubensis and can be mistakenly mixed with cubensis harvests.

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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