Gymnopilus viridans is a mushroom in the family Hymenogastraceae. It contains the hallucinogens psilocybin and psilocin. It is a rarely documented species, the last known collection being from the US state of Washington in 1912.

Gymnopilus viridans
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Hymenogastraceae
Genus: Gymnopilus
Species:
G. viridans
Binomial name
Gymnopilus viridans
Synonyms

Flammula viridans

Gymnopilus viridans
View the Mycomorphbox template that generates the following list
Gills on hymenium
Cap is convex
Hymenium is adnexed or adnate
Spore print is yellow-orange
Ecology is saprotrophic
Edibility is psychoactive

Description

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  • 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 in height, 2 cm in diameter, enlarging below, solid, firm, concolorous with the cap.
  • Microscopic features: Spores 7 x 8.5 x 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

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

References

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