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Psilocybe semiinconspicua

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Psilocybe semiinconspicua is a psilocybin mushroom in section Semilanceatae 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.

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.

Description

Cap

The cap is 7–12 mm and convex, becoming nearly plane in age. It is hygrophanous, has a smooth surface, and is olive black when moist, fading to brownish orange or dark reddish brown as it dries.

Gills

The gills are Adnate light grayish brown at first, turning dark purple as the spores mature.

Spores

Psilocybe semiinconspicua spores are 8–10 x 5–7 µm, subovoid to ellipsoid, thick-walled, and yellowish brown to dark purple brown in deposit.

Stipe

The stipe is 15–20 x 2 mm, hollow, has an equal width, and is white with whitish or brownish floccose scales, drying to a reddish brown. It stains blue near the base.

Microscopic features

The Psilocybe semiinconspicua basidia have four spores each. The cheilocystidia are sublageniform and 24–30 x 6–8 µm. No pleurocystidia have been observed. Clamp connections are present.

Habitat

Psilocybe semiinconspicua is gregarious in small groups among shrubs on a creek bank.

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
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This page uses content from the English Wikipedia. The original article was at Psilocybe semiinconspicua. The list of authors can be seen in the page history.

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