Agaricus placomyces Flat-Top Agaricus
Diagnostic Features: This woodland Agaricus is recognized by the large, persistent ring and the scattered brownish to blackish scales over a whitish base. The ring sometimes attaches to the edge of the cap. The scales can be quite profuse or are scattered so thinly over the surface that they can only be seen on the younger caps.
Description: Caps are 5-15 cm, convex to flat, dry, pallid, and more or less covered with blackish-brown or grey-black scales. Flesh is white to pink, and stains yellow to brown. Gills are free, crowded, pink, becoming purple-brown. Stalks are up to 12 cm tall by 1.5 cm wide, white, staining yellow, and smooth. Ring is large and persistent. Spore prints are purple-brown. Not edible.