Page author: Olivia Filialuna
Agaricus arvensis
horse agaricus, horse mushroom, prairie mushroom

Habitat: grasslands and pastures

Conservation Status: Not of concern

Edibility: Edible



Identification Notes:

Spores are chocolate-brown; growth up to 5 inches; cap diameter up to 6 inches. Agaricus macrocarpus grows slightly larger and in woods. Agaricus urinascens grows even larger and develops an ammonia smell with age. Agaricus xanthodermus has a bulbous base and flesh that turns bright yellow when cunt while releasing a chemical, ink-like smell.

Sources: Roberts, Peter and Evans, Shelley. The Book of Fungi. Chicago, The University of Chicago Press, 2011.

Accepted Name:
Agaricus arvensis Schäff.

Synonyms & Misapplications:
(none provided)
Additional Resources:

PNW Herbaria: Specimen records of Agaricus arvensis in the Consortium of Pacific Northwest Herbaria database.

CalPhotos: Agaricus arvensis photos.

6 photographs:
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