Lepiota americana Pk. Cap 3-15cm across, oval becoming broadly convex, then flat with an umbo; background whitish at first, then reddening when mature and bruised; dry and smooth but quickly breaking into large, coarse, reddish-brown or dingy pinkish-buff scales. Gills free, close, broad; white staining pinky-buff. Stem 70-130 x 5-20mm, often enlarged at or below the middle and tapering toward the base; white at first, staining or aging pinkish or reddish brown; smooth with adpressed silky hairs. Veil membranous partial veil leaves a white double edged ring on the upper stalk which may disappear in age. Flesh thick, firm; white staining yellowish then reddish brown. Spores broadly ellipsoid, smooth, dextrinoid, 9-10.5 x 7-8.5µ. Deposit white. Habitat singly or in dense clusters in fields, waste places, and sawdust piles and around stumps. Found widely distributed in eastern North America, west to Michigan. Season June-October. Edible.