Cortinarius pholideus
The scaly caps and stalks make this species readily distinguished from other Cortinarius species.
Caps are 4-8 cm, convex to bell-shaped or flat, with a broad umbo, dry, brown, covered with dark brown scales. Gills are attached, close, violet, ageing brown. Stalks are up to 10 cm tall by 1.5 cm wide, coloured as cap or paler, scaly. Spore prints are rust-brown. Widespread but not common, it fruits under birch. Not edible.