Pileus: 3.5-15cm across; grayish-brown, brown, olive-brown or white; paler at margin;
often radially streaked; viscid when wet; convex, plane or shallowly depressed in age;
margin non-striate; universal veil leaving white, floccose patches
when present; pileus flesh white, staining brown.
Stipe: 5-15cm long, 8-21mm at apex; surface white, staining brown,
smooth to floccose-squamulose; flesh white, staining reddish brown to
brown; central, round, tapered upward; abruptly bulbous; basal bulb
marginate, globous to sub-globous; bulb often with distinct vertical
Partial veil: present; white to dingy white, membranous, pendant,
superior, thin, persistent; usually attached, but can become free.
Universal veil: present, white; collar-like?, membranous?
Hymenophore: lamelluate, white, crowded, smooth, free; lamellulae generally present.
Spore print: white
Spores: 7.5-10 × 7-8.6 microns, globose to subglobose, smooth, hyaline, amyloid.
The spores measure (7.0-) 8.0 – 9.2 (-9.5) x (6.5-) 7.2 – 8.5 (-9.2) µm and are globose to subglobose (occasionally broadly ellipsoid) and amyloid. Clamps are absent from bases of basidia. (Tulloss)
Odor: indistinct or of raw potatoes
Grouping: solitary, scattered, gregarious