Species #1: Flat-topped Agaricus (Agaricus placomyces)

These are flat-topped agaricus. They were growing in Monteith riparian ecosystem, underneath dogwood and blackberry, in a shaded, damp area. They have gills, which are free from the stalk and slightly pink. Their stalk is mostly white, with a thick base and a ring. Their cap is tan and has small, brown “scales” that radiate…