Gymnopilus validipes is a widely distributed mushroom of North America and Europe. Gymnopilus validipes contains the hallucinogens psilocybin and psilocin. The mild taste of this mushroom stands in contrast to closely related bitter species. Validipes means "having a robust stalk."


  • Pileus: (4)7.5 — 15(30) cm, Convex to broadly convex, margin deeply incurved at first, becoming revolute with age, dry, fibrillose or with small ochraceous brown scales, pale-yellow or ochraceous buff, flesh soft, whitish, yellowish near the gills.
  • Gills: Adnate to uncinate, close, thin, yellowish white becoming cinnamon.
  • Spore Print: Orangish brown.
  • Stipe: (7.5)10 — 13(25) cm. long, (1.5)2.5 — 5 cm. thick, equal or swelling in the middle, fleshy-fibrous, solid, elastic, fibrillose, concolorous, white within, the cortina leaves only a faint ring on the robust stalk.
  • Taste: Mild.
  • Odor: Pleasant.
  • Microscopic features: Spores (7.5)8 — 10 X 5 — 6, ellipsoid.

Habitat and formation

Gymnopilus validipes is found growing gregarious to cespitose on tree stumps, hardwood logs and debris, widespread in the United States, common from the Great Lakes and eastward.


  • Stamets, Paul (1996). Psilocybin Mushrooms of the World. Berkeley: Ten Speed Press. ISBN 0-9610798-0-0. 
  • Hesler, L. R. (1969). North American species of Gymnopilus. New York: Hafner. 117 pp.
This page uses content from the English Wikipedia. The original article was at Gymnopilus validipes. The list of authors can be seen in the page history.

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