Panaeolus antillarum

Panaeolus antillarum (Fr.) Dennis

Agaricus antillarum
Agaricus solidipes
Panaeolus phalaenarum
Panaeolus sepulchralis
Psilocybe antillarum


Macroscopic feat.:
  • Cap/Pileus: 4-10 cm broad. Hemispherical to broadly convex, whitish at first becoming silvery whitish-grayish with age, sometimes appearing slightly yellowish, a bit rare for yellow. Surface very smooth to rimose-scaly. Flesh is very thick and whitish.
  • Gills/Lamellae: Adnexed to adnate, close and broad and slightly swollen in the center. Whitish to grayish at first and then becoming dark to mottled black. Edges of gills are whitish-gray.
  • Stem/Stipe: 40-200 mm long by 5-15 mm thick. Equal to slightly enlarged and curved at the base and solid but sometimes is twisted. Very whitish in color and the surface is smooth and striate towards the base.

Microscopic feat.:
  • Basidio/Spores: 18-20 x 11-12,5 µm, and are ellipsoid in shape. Sporeprint black in deposit.

Habitat: Gregarious to subcespitose in manure of cattle, gaur, water buffalo, sheep and sometimes horses. And many other four-legged ruminants.

Distribution: Widely distributed with a cosmopolitan distribution.

Season: In the spring and fall and during the rainy seasons. The author has found this species to be common in Thailand and Cambodia as well as Florida and other regions of the USA and Europe

Dosage: This species is not psychoactive.

Comment: In the late 1940s this species gained a reputation in Australia as the "Hysteria Fungus" allegedly causing accidental hallucinogenic inebriations in foragers in some parts of that country. Later it was determined that the actual causative mushrooms were Copelandia cyanescens which is macroscopically similar in appearance to Panaeolus antillarum. This species is edible but it's bitter rancid taste is not worth eating.

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