''Gymnopilus viridans'' is a mushroom in the family

Hymenogastraceae The Hymenogastraceae is a family of fungi in the order Agaricales with both agaric and false-truffle shaped fruitbodies. Formerly, prior to molecular analyses, the family was restricted to the false-truffle genera. The mushroom genus '' Psilo ...

. It contains the hallucinogens

psilocybin Psilocybin, also known as 4-phosphoryloxy-''N'',''N''-dimethyltryptamine (4-PO-DMT), is a natural product, naturally occurring tryptamine alkaloid and Investigational New Drug, investigational drug found in more than List of psilocybin mushroom ...

and

psilocin Psilocin, also known as 4-hydroxy-''N'',''N''-dimethyltryptamine (4-HO-DMT), is a substituted tryptamine alkaloid and a serotonergic psychedelic. It is present in most psychedelic mushrooms together with its phosphorylated counterpart psilocy ...

. It is a rarely documented species, the last known collection being from the US state of

Washington Washington most commonly refers to: * George Washington (1732–1799), the first president of the United States * Washington (state), a state in the Pacific Northwest of the United States * Washington, D.C., the capital of the United States ** A ...

in 1912.

Description

* 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

''Gymnopilus viridans'' is found growing cespitose on

coniferous Conifers () are a group of conifer cone, cone-bearing Spermatophyte, seed plants, a subset of gymnosperms. Scientifically, they make up the phylum, division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a sin ...

wood from June to November.

References

* ''("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 {{Taxonbar, from=Q5625040 viridans Entheogens Psychoactive fungi Psychedelic tryptamine carriers Fungi of North America Taxa named by William Alphonso Murrill Fungus species