Public Description of Psilocybe azurescens Stamets & Gartz

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Name: Psilocybe azurescens Stamets & Gartz
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Description status: Unreviewed

Taxonomic Classification:

Kingdom: Fungi
Phylum: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Hymenogastraceae

General Description:

Pileus 30-100 mm in diameter, conic to convex, expanding to broadly convex and eventually flattening with age with a pronounced, persistent broad umbo; surface smooth, viscous when moist, covered by a separable gelatinous pellicle; chestnut to ochraceous brown to caramel in color often becoming pitted with dark blue or bluish black zones, hygrophanous, fading to light straw color in drying, strongly bruising blue when damaged; margin even, sometimes irregular and eroded at maturity, slightly incurved at first, soon decurved, flattening with maturity, translucent striate and often leaving a fibrillose annular zone in the upper regions of the stem. Lamellae ascending, sinuate to adnate, brown, often stained info-black where injured, close, with two tiers of lamellulae, mottled, edges withish. Spore-print dark purplish brown to purplish black in mass. Stipe 90-200 mm long by 3-6 mm thick, silky white, dingy brown from the base or in age, hollow at maturity. Composed of twisted, cartilaginous tissue. Base of stem thickening downwards, often curved, and characterized by coarse white aerial tufts of mycelium, often with azure tones. Mycelium surrounding stipe base densely rhizomorphic (i.e., root-like), silky white, tenaciously holding the wood-chips together, strongly bruising bluish upon disturbance. They have no odor to slightly farinaceous. Their taste is extremely bitter.


Cespitose to gregarious on deciduous wood-chips and/or in sandy soils rich in lignicolous debris. Aspect collyboid, generating an extensive, dense and tenacious mycelial mat, Psilocybe azurescens causes the whitening of wood. Fruitings begin in late September and continue until harsh frost, usually mid-November.


Cultivated patches occur worldwide, but natural patches are found along the US Pacific coast, north of Seaside, Oregon, as well as Astoria, Oregon. Isolated patches have been found as far south as Arcata, California and are very common in Humboldt County, CA.




Psilocybe azurescens is a psychedelic mushroom whose main active compounds are psilocybin and psilocin. It is among the most potent1 of the tryptamine-bearing mushrooms, containing up to 1.8% psilocybin, 0.5% psilocin, and 0.4% baeocystin by dry weight, averaging to about 1.1% psilocybin and 0.15% psilocin. It belongs to the family Strophariaceae in the order Agaricales.

Description author: Micah Courteau (Request Authorship Credit)
Description editors: Nathan Wilson, David Reishi

Created: 2009-07-22 01:42:20 PDT (-0700) by Micah Courteau (waynegrompsky)
Last modified: 2016-11-20 20:37:45 PST (-0800) by David Reishi (DavidReishi)
Viewed: 714 times, last viewed: 2018-02-23 16:01:08 PST (-0800)