Cortinarius evernius is a species of fungus in the family Cortinariaceae. The mushroom is grayish brown or grayish purple. The cap is convex and it has remnants of the membrane. The gills are greyish purple in the beginning, then brownish. The stipe is grayish purple and it has remnants of the partial veil.
The mushroom cap is wide, conical when young and then umbonate, reddish to violet-brown, often with a white-edged margin, smooth (possibly silky in appearance) and dry, with a mild odor. The gills are adnate or notched, violet then brown. The stalk is tall and 1âÂÂ2 cm wide, equal or thicker at the base, tinted violet, dry, and partly covered by whitish remnants of partial veil in a zig-zag pattern. The spores are brown and elliptical.
The mushroom's edibility is unknown, but its consumption is not recommended due to some related species being deadly poisonous.
Similar species include Cortinarius brunneus, C. obtusus, and C. vernus.
The mushroom grows in coniferous forests and near swamps.