| Inosperma calamistratum | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Agaricales |
| Family: | Inocybaceae |
| Genus: | Inosperma |
| Species: | I. calamistratum |
| Binomial name | |
| Inosperma calamistratum (Fr.) Matheny & Esteve-Rav. | |
| Synonyms | |
Inocybe calamistrata(Fr.) Gillet | |
Inosperma calamistratum | |
|---|---|
 | Gills on hymenium |
  | Cap is campanulate or convex |
  | Hymenium is adnate or free |
 | Stipe is bare |
 | Spore print is brown |
 | Ecology is mycorrhizal |
 | Edibility is unknown |
Inosperma calamistratum, until 2019 known as Inocybe calamistrata, [1] is a species of Inocybaceae fungus.
The tannish cap is up to 5 centimetres (2 in) wide. The stem is up to 15 cm (6 in) long, possibly staining reddish above and/or blue-green below. [2] [3] The beige gills are fairly close and produce a brown spore print. The scent is typically pungent. [2] Perhaps similar are Inocybe calospora , which does not stain, and I. tahquamenonensis , which is purplish. [2]
The species is found in Europe[ citation needed ] and North America (July–September to the east; August–November by the West Coast). [2]
Orson K. Miller Jr. and Hope Miller list the species as poisonous. [4] It was suspected of being psychotropic because of the blue-green tinge present at the stipe base, with David Arora citing a study claiming to detect psilocybin. [5] Later analysis did not find the mushrooms to contain psilocybin or similar alkaloids. [6]