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(0.5)1 - 2(3) cm in diameter, conic to campanulate or subumbonate and often with a slight papilla, hygrophanous or glabrescent, even to striate at the margin, ocherous to brown or beige to straw color in age, sometimes with blueish or greenish tones, easily turning blue when injured.
Adnate or adnexed, gray to purple-brown with whitish edges.
4 - 10(12.5) cm tall x 1 - 2(3) mm thick, equal, hollow, straw color to brownish or reddish-brown, becoming darker where injured, annulus absent.
Spores dark purple brown, 8 - 12 x 5 - 8 um. Ovoid and smooth. Cheilocystidia 13 - 34 um, fusoid-ampullaceous to sublageniform, sometimes with a forked neck. Pleurocystidia sublageniform or absent.
Fruiting takes place from May to October.
Habitat and Distribution:
The species is found in Mexico, growing among moss along roadsides and trails, humid meadows or cornfields, in particular in the grassy areas bordering deciduous forests, and limestone regions. Common at elevations between 300-550 metres (980-1,800 ft), rare in lower elevations, known only from Mexico and Guatemala.
Graeme Lyons MO Occurrence Map
Solitary or in small groups.
As is characteristic of psilocybin mushrooms, all parts of the fruit body bruise blue when handled or injured.
- Lvl.1 0.8g
- Lvl.2 1.4g
- Lvl.3 2.4g
- Lvl.4 3.7g
- Lvl.5 5.0g
It was first used by the early natives of Central America and North America over 2,000 years ago. Known to the Aztecs as teonanacatl from Nahuatl: teotl "god" nanacatl "mushroom." This species was discovered by French botanist Roger Heim.
It was from this species that Dr. Albert Hofmann, working with specimens grown in his Sandoz laboratory, first isolated and named the active entheogenic compounds psilocybin and psilocin. Uncertain of whether or not the artificially cultivated mushrooms would retain their natural psychoactive properties, Dr. Hofmann consumed thirty-two specimens.
Like some other grassland species such as Psilocybe semilanceata, Psilocybe tampanensis, and Conocybe cyanopus, Psilocybe mexicana may form sclerotia, a dormant form of the organism, which affords it some protection from wildfires and other natural disasters.
Psilocybe mexicana is a moderately potent hallucinogen due to the presence of both psilocybin (4-phosphoryloxy-N,N-dimethyltry
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