Habitat: grasslands, roadsides, seashores, and road-salt runoff areas
Conservation Status: Not of concern
Edibility: Edible
Edible
Spores are chocolate-brown; growth up to 5 inches; cap diameter up to 8 inches. Agaricus bitorquis genearlly has a double ring without the sock-like base and lacks a fishy smell.
Sources: Roberts, Peter and Evans, Shelley. The Book of Fungi. Chicago, The University of Chicago Press, 2011.
PNW Herbaria: Specimen records of Agaricus bernardii in the Consortium of Pacific Northwest Herbaria database.
CalPhotos: Agaricus bernardii photos.