Aureonarius rubrocastaneus (Soop) Niskanen & Liimat.
Basionym: Cortinarius rubrocastaneus Soop
This species has a dry mahogany red to dark red cap. Cap diam: to 70 mm. The gills are mustard yellow. The stipe is cylindrical and is pale yellow-ochraceous with orange-red to brown fibrils. Under beech.
