''Psilocybe caerulescens'', also known as landslide mushroom ("derrumbe" in Spanish), is a psilocybin mushroom having psilocybin and psilocin as main active compounds. Along with '' Psilocybe mexicana'' and ''

Psilocybe aztecorum ''Psilocybe aztecorum'' is a species of psilocybin mushroom in the family Hymenogastraceae. Known from Arizona, Colorado, central Mexico, India and Costa Rica, the fungus grows on decomposing woody debris and is found in mountainous areas at el ...

'', it is one of the mushrooms likely to have been used by the Aztecs and is currently used by Mazatec shamans for its entheogenic properties.

Description

The taste and smell of ''Psilocybe caerulescens'' are strongly farinaceous, reminiscent of cucumber, though the smell lessens with age or when dry.

Cap

The cap is (1)3–7(10) cm broad. Convex to obtusely campanulate with an incurved margin at first, rarely becoming plane, and often are umbonate or with a slight depression in the center. It is viscid when moist from a separable gelatinous pellicle. The margin is slightly translucent-striate when moist. The cap is hygrophanous, yellowish brown to reddish brown with a silvery-blue metallic luster, paler at the margin, and drying to a beige or straw yellow. It readily bruises blue when handled, the younger specimens bruising bluish olivaceous or even blackish. The cap often has a great variation in color and form.

Gills

The gills are

adnate Adnate may refer to: * Adnation, in botany, the fusion of two or more whorls of a flower * Adnate, in mycology, a classification of lamellae (gills) * Conjoined twins Conjoined twins – sometimes popularly referred to as Siamese twins – are ...

to sinuate and close to subclose. They are whitish, yellowish grey when young, becoming dark violaceous brown to sepia brown with age; the edges remain slightly whitish.
''Psilocybe caerulescens''

spore In biology, a spore is a unit of sexual or asexual reproduction that may be adapted for dispersal and for survival, often for extended periods of time, in unfavourable conditions. Spores form part of the life cycles of many plants, algae, f ...

s are dark violaceous brown.

Stipe

The stipe is (2)5–9(13) cm long and (5)8–10(12) mm thick. It is equal or enlarging slightly at the base, and is somewhat flexuous, hollow, and subpruinose to

floccose {{Short pages monitor