Psilocybe semiinconspicua

Taxobox
name = "Psilocybe semiinconspicua"


regnum = Fungi
divisio = Basidiomycota
classis = Agaricomycetes
ordo = Agaricales
familia = Strophariaceae
genus = "Psilocybe"
species = "P. semiinconspicua"
binomial = "Psilocybe semiinconspicua"
binomial_authority = Guzman & J. M. Trappe

"Psilocybe semiinconspicua" is a psilocybin mushroom native to the state of Washington, USA. The mushroom is small, rare, difficult to see and stains blue where damaged. It can be mistaken for "Psilocybe silvatica" and can be distinguished by its more conic cap, narrower spores and narrower cheilocystidia.

It has been placed in Psilocybe section Semilanceatae due to its blue staining and thick walled subovoid spores.

This mushroom is only known from the type locality where it was found at the Glacier Peak Wilderness Area in Wentachee National Forest, Washington, USA.

Habitat

Found in small groups among shrubs on a creek bank.

Description

*Cap: 7 - 12 mm, convex to nearly plane in age. Surface smooth, hygrophanous, olive black when moist, fading to brownish orange or dark reddish brown as it dries.
*Gills: Adnate light grayish brown at first, turning dark purple as the spores mature.
*Spores: 8 - 10 x 5 - 7 micrometers, subovoid to ellipsoid, thick walled, yellowish brown to dark purple brown in deposit.
*Stipe: 15 - 20 x 2 mm, hollow, equal width, white with whitish or brownish floccose scales, drying to a reddish brown. Staining blue near the base.
*Microscopic features: Basidia 4 spored, cheilocystidia sublageniform, 24 - 30 x 6 - 8 micrometers, pleurocystidia not observed. Clamp connections present.

References

*Guzman and Trappe 2005: The Hallucinogenic and Nonhallucinogenic Species of the Genus Psilocybe Fayod (Basidiomycotina) in Washington State, USA: New Records and a New Species - International Journal of Medicinal Mushrooms 583-590