Large, reddish brown mushroom with scaly cap and ring on stalk; bruises dark red. Single or in clusters on mulch or dead wood. June–October. Cap convex to flat, with a definite knob in the center; whitish with pinkish scales when young, ages reddish brown; bruises dark red; flesh white, bruising yellowish orange when young, red with handling or with age; texture scaly. Gills broad; spacing close; white, turning reddish; attachment free. Stalk widening toward the middle, then tapering toward the bottom; white at first, staining reddish brown with handling or age; texture smooth; has a ring. Partial veil leaving a white, skirtlike ring on the upper stalk. Spore print white. Spores magnified are elliptical, smooth, colorless, with a pore at the tip.
Lookalikes: Green-spored lepiota (Chlorophyllum molybdites) has white gills that turn grayish or greenish, green spores, and it does not bruise red. Parasol (Macrolepiota procera) does not bruise red and has a scaly stalk.