The pileus is entirely white, fleshy, obtuse, dry; sometimes even, sometimes marked with fine lines around the margin.
The gills are free, remote, quite ventricose, narrowed toward the stem, crowded, white, and only in mature plants do they become brownish. Spores, 5–6×3.5µ.
The stem is two to three inches long, even, smooth, firm, tapering toward the cap, hollow, or stuffed with a fine pith, white.
It is found on lawns and in rich places. I find it more frequently in rich stubble fields. It makes a rare dish. Found in August and September.
Agaricus subrufescens. Pk.
The Slightly Red Mushroom. Edible.
Subrufescens, sub, under; rufescens, becoming red. The pileus is at first inclined to be hemispherical, becoming convex or broadly expanded; silky fibrillose and minutely or obscurely scaly, whitish, grayish, or dull reddish-brown, usually smooth and darker on the disk. Flesh white and unchangeable.
The gills are at first white or whitish, then pink, finally blackish-brown.
The stem is rather long, often somewhat thickened or bulbous at the base, at first stuffed, then hollow, white, the ring is scaly on the under side, mycelium whitish, forming slender branching root-like strings. The spores are elliptical. Peck, 48th Rep. N. Y. State Bot.
The reddish-brown color is due to the coating of fibrils that covers the cap. In the center it does not separate into scales, hence it is smoother and more distinctly reddish-brown than the rest. Its veil resembles that of the A. placomyces, but instead of the lower surface breaking into radial portions it breaks into small floccose flakes or scales.