AppearanceThe cap of the mushroom is 5–25 cm in diameter, convex with an incurved margin, becoming plane to depressed in shape. Cap colours are generally greyish to light brownish-grey, and often covered in a whitish bloom when young. The surface of the cap is usually dry to moist, and radially fibrillose. The stem is stout, swollen towards the base, becomes hollow with age, and is easily broken. It is usually somewhat lighter than the cap. The flesh is white, and very thick. It has a foul-smelling odour, which has been described as slightly farinaceous to rancid. This species is host to the parasitic gilled mushroom ''Volvariella surrecta'', which is found on older specimens.
It may be confused with the poisonous ''Entoloma sinuatum'' both in Europe or North America, though this species has pink sinuate gills.
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