Melanoleuca arcuata (Fr.) Sing. s. Bresinky & Stangl. syn. Tricholoma friesii Bres. Dunkelbrauner Weichritterling. Cap 4–12cm, flattened convex, slightly umbonate or centrally depressed, reddish-brown to blackish-brown when moist drying grey-brown. Stem 30–60 x 5–13mm, bulbous, whitish and mealy at apex, grey-brown and smooth below. Flesh white or tinged ochraceous in cap, brown in stem becoming darker towards the base. Taste and smell not distinctive. Gills white. Cheilocystidia thin-walled, lanceolate. Spore print white. Spores elliptic, minutely ornamented, amyloid, 7–9 x 4.5–5.5um. Habitat amongst grass in open woodland. Season autumn. Frequent. Edibility unknown -avoid. Found In Europe.