Greenflush Fibrecap, Syn. Inocybe corydalina var. corydalina, Syn. Inocybe corydalina var. erinaceamorpha

Inocybe corydalina is a rare and very weakly active psilocybin-producing mushroom of the large Inocybe genus. It is widely distributed in temperate forests of Europe and North America where it spreads through its symbiotic relation with plants.

Inocybe corydalina, has two known varieties: Inocybe corydalina var. corydalina and Inocybe var. erinaceamorpha. Researches argue that both of the corydalina varieties are psilocybin-producing, Inocybe corydalina var. erinaceamorpha having tested positive to containing the poisonous compound muscarine. Unfortunately, the result was not confirmed by other researches and the limited collection of specimen limits production of new data. Other chemical analyses show a rather weak concentration of psilocybin, often no psilocin and a fairly high level of baeocystin.

This is yet another good example of the risky minefield of the Inocybe genus with over 1400 species of edible, psychoactive and poisonous mushrooms mixed, identification is tricky, and mistakes can be deadly.


Visual Description

• Cap: 3.8-5.2 cm borad. Obtusely conic to convex, becoming broadly convex to nearly plane in age, often with a small umbo. When young, the margin of the cap is incurved, with age decurved, occasionally wavy. Coloration brown to buff brown with greenish gray tones, turning darker brown to greenish blue, sometimes nearly black at disk. Surface is fibrous, flesh is white. • Gills: numerous, narrow, adnate and weakly attached to the stem. Colored pale cream brown to grayish. • Stem: 24-95 mm long, 5-15 mm thick. Hollow inside. Upper part is smooth, lower part is fibrillose. Sometimes has a ring. Color is whitish to dull grey, to ochraceous brown, to sordid brown. Base often with greenish tinges. • Spore print: brown • Microscopic features: 7-10 x 5-5 µ • Odor and taste: referred to as aromatic, similar to Peruvian balsam.

Potency Description

Inocybe corydalina var. corydalina specimen: 0.032% psilocybin, no psilocin, 0.034% baeocystin Inocybe var. erinaceamorpha specimen: 0.10%psilocybin, no psilocin, 0.34% baeocystin. (Stijve and Kuyper 1985) Gurevich and Nezoiminogo (1994) reported that an I. corydalina var. corydalina tested negative for psilocybin and positive for muscarine, a poisonous compound. This result was not confirmed by other researchers.

Habitat Origin

Widespread across Europe, the British Isles and North America in August through October, mostly under deciduous trees, sometime under conifers in woodland soil.

Strain Effects

In the wide collection of psychedelic fungi, and the minefield that this genus represents, Psilocybe authority Stamet doesn't advise the picking and consumption of Inocybe from the wild.

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