flat (sometimes broadly bell-shaped); slimy; reddish brown to purple-brown, brown, or olive brown—often fading to tan or pale yellowish brown; smooth; occasionally with white partial veil remnants near the margin.
Gills: Attached to the stem or beginning to pull away from it; close; pale gray at first, later purplish gray to purple-black.
Stem: 5-15 cm long; up to 2.5 cm thick; equal; dry; with a persistent, skirtlike, white ring that becomes dusted with purple-black spore dust; conspicuously shaggy-scaly, especially when young; base often with mycelial threads.
Odor and Taste: Somewhat foul.
Spore Print: Dark purple-brown to blackish.
Microscopic Features: Spores 10-14 × 5.5-7 µ; smooth; elliptical. Chrysocystidia present. Cheilocystidia present.