How to identify it?
Cap
Cap 5-10 cm across, convex at first and flat when expanded; white, pale brownish at the center; surface dry, smooth, scaly, shiny.
Photo By damontighe , used under CC-BY-NC-4.0 /Cropped and compressed from original
Scientific Classification
Phylum
Club fungi Class
Mushroom-forming fungi Order
Gilled fungi Family
Agaricaceae Genus
Agaricus Species
California agaricus