Golden Teacher vs Teonanácatl
Psilocybe cubensis compared with Psilocybe mexicana — how to tell them apart in the field.
This is a dangerous confusion.
At least one of these species is toxic. Never eat a wild mushroom based on a photo comparison alone — verify with local experts.
Golden Teacher / Magic Mushroom
Psilocybe cubensis
ToxicPsychoactive
Teonanácatl / Mexican Magic Mushroom
Psilocybe mexicana
ToxicPsychoactive
How to Tell Them Apart
Much larger (cap 2-8 cm), grows on dung in tropical lowlands, not high-altitude grasslands. Golden-brown cap with more robust stature. Both contain psilocybin.
Side-by-Side Identification
| Trait | Golden Teacher | Teonanácatl |
|---|---|---|
| Cap | 2-8 cm across. Convex when young, flattening with age, often with a slight central bump (umbo). Golden-brown to pale yellowish when dry, darker caramel-brown when wet. Surface is smooth and slightly sticky. Bruises blue when damaged — this is the key tell for psilocybin content. | 1-3 cm across. Conical to campanulate (bell-shaped), sometimes with a small umbo. Straw-yellow to brown, darker when moist, paler when dry. Surface smooth, slightly hygrophanous. Margin sometimes slightly translucent-striate when wet. |
| Gills | Closely spaced, attached to the stem (adnate to adnexed). Start out pale gray, darken to deep purple-brown as spores mature. Edges may appear slightly lighter or mottled. | Adnate to adnexed, moderately spaced. Gray to purple-brown at maturity. Edges whitish. |
| Stem | 4-15 cm tall, 0.5-1.5 cm thick. White to off-white, often with a thin partial veil ring (annulus) that catches falling spores and turns purplish-black. Bruises blue when handled — a hallmark of psilocybin-containing species. Base may have whitish mycelial strands. | 4-12 cm tall, 1-3 mm thick. Thin, wiry, and flexible. Yellowish to reddish-brown, darker toward the base. Hollow. May show faint blue-green bruising when handled. |
| Spore print | Dark purple-brown to nearly black. Always take a spore print when identifying — this rules out many lookalikes. | Dark purple-brown. |
| Bruising | Distinctive blue-green bruising on cap and stem within minutes of handling or cutting. Caused by oxidation of psilocin. This is the single most important field identification feature. | Blue-green bruising on stem and cap when damaged, though often faint. Indicates presence of psilocybin. |
| Habitat | Coprophilic — grows directly on or near cattle and horse dung in tropical and subtropical pastures. Also found in well-manured grasslands and occasionally on enriched soils. Prefers warm, humid conditions with temperatures above 20C (68F). | Grows in small groups on mossy, grassy slopes and trails in subtropical cloud forests, often among mosses and grasses at elevations of 1,000-1,800 meters. Also found in meadows and roadsides at the margins of forests. Occasionally in disturbed grassy areas. |
| Season | Year-round in tropical regions. In subtropical areas like the U.S. Gulf Coast, primarily spring through fall after warm rains. Peak fruiting follows periods of heavy rainfall when temperatures are between 21-27C (70-80F). | May through October, corresponding with the rainy season in southern Mexico and Central America. Peak fruiting in June through August. |
Found one of these in the wild? Don't rely on memory — identify it from a photo with Orangutany and check it against both species before you touch it.