Gymnopilus viridans

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Gymnopilus viridans
Scientific classification
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Cortinariaceae
Genus: Gymnopilus
Species: G. viridans
Binomial name
Gymnopilus viridans

Flammula viridans

Gymnopilus viridans
View the Mycomorphbox template that generates the following list
Mycological characteristics
gills on hymenium
cap is convex

hymenium is adnexed

or adnate
spore print is yellow-orange
ecology is saprotrophic
edibility: psychoactive

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[edit]

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


  • Murrill, William (1912). "Gymnopilus viridans". Mycologia 4: 257. doi:10.2307/3753448.  ("For the benefit of those using Saccardo's nomenclature, the following new species in the above article are recombined, as follows: Gymnopilus viridans = Fammula viridans" p. 262)
  • Hesler, Mycologia Memoir No. 3 1969, North American Species of Gymnopilus