Panaeolus papilionaceus

Petticoat Mottlegill

A slender, bell-capped dung mushroom with gray to black mottled gills, a black spore print, and white tooth-like veil fragments hanging from the young cap margin. It is common on horse and cow dung worldwide. MushroomExpert.com treats Panaeolus campanulatus, P. sphinctrinus and P. retirugis as synonyms of this species. Wikipedia states that it does not contain psilocybin.

Species profile

Edibility: Not edible
Considered inedible: insubstantial and unappetizing. Wikipedia states it does not contain psilocybin, unlike similar species. Small dung-inhabiting mushrooms are easily confused, and some Panaeolus and Psilocybe species are psychoactive (psilocybin), while toxic Conocybe species also grow in lawns and pastures. Not for eating.

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Characteristics

Cap: 1-5 cm, obtusely conical to bell-shaped or nearly round, expanding; dry, smooth to silky, often becoming finely hairy or cracked; whitish, gray, brown or reddish brown, sometimes olive-tinged; margin with white, tooth-like partial veil fragments when young. Gills: attached or pulling away, close or crowded, grayish becoming mottled and finally black, edges whitish. Stem: 4-16 cm long, up to 5 mm thick, equal, finely hairy, brittle, paler at the apex and darkening or reddening toward the base; no ring. Spore print: black. Spores: 11-18.5 x 7.5-12 um, elliptical, smooth, with a germ pore, dextrinoid (MushroomExpert.com).