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Gymnopilus viridans

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Gymnopilus viridans is a rarely documented mushroom. It contains the hallucinogens psilocybin and psilocin. The last known collection is from Washington, United States (1912).


  • Pileus: — 8 cm, thick, convex with a large umbo, ochraceous, dry, with conspicuous light reddish brown scales that are sparse but become denser toward the center; flesh firm, becoming green-spotted where handled.
  • Gills: Adnate, broad, crowded, edges undulate, dingy brown to rusty brown with age.
  • Spore Print: Rusty brown.
  • Stipe: — 6 cm x 2 cm thick, enlarging below, solid, firm, colored like the cap,
  • Microscopic features: Spores (6)7 x 8.5 x (3.5)4 — 5 µm ellipsoid, not dextrinoid, minutely verruculose, obliquely pointed at one end, no germ pore. Pleurocystidia absent, Cheilocystidia 20 — 26 x 5 — 7 µm, caulocystidia 35 — 43 x 4 — 7 µm, clamp connections present.

Habitat and formation

Gymnopilus viridans is found growing cespitose on coniferous wood from June to November.


Murrill, Mycologia 4: 257. 1912. (Flammula viridans Murrill, Mycologia 4: 262. 1912.) Hesler, Mycologia Memoir No. 3 1969, North American Species of Gymnopilus

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

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