Panaeolus acuminatus

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Panaeolus acuminatus
Panaeolus acuminatus.jpg
Scientific classification
P. acuminatus
Binomial name
Panaeolus acuminatus

Panaeolus rickenii

Panaeolus acuminatus
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Mycological characteristics
gills on hymenium
cap is convex
hymenium is adnexed
stipe is bare
spore print is black
ecology is saprotrophic
edibility: unknown

Panaeolus acuminatus, also known as Panaeolus rickenii is a common little brown mushroom.

This species contains small amounts of serotonin (licit tryptamine), 5-HTP, and tryptophan.


This is a little brown mushroom that grows on dung and has black spores. It has a cap that is less than 4 cm across, hygrophanous, conic to campanulate to plane, usually with an umbo. The gills are dark purplish black, crowded, with several tiers of intermediate gills. The spores are (11) 13 - 15 (17) x 9 - 11 (12) x (6.5) 7 - 8 (9) micrometers, smooth, black, and shaped like lemons.[1] Cheilocystidia present.

Habitat and distribution[edit]

Panaeolus acuminatus is a mushroom that grows in grass and in dung. It has been found throughout North America and Europe and is very widely distributed.

See also[edit]

External links[edit]


  1. ^ Gerhardt, E: Taxonomische Revision Gattungen Panaeolus und Panaeolina, page 73. 1996