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Page number:182 
Remarks (internal):Entoloma atrosericeum is one of those dark-coloured Entoloma species that seems to be restricted to alpine habitats, and is supposed to form ectotrophic mycorrhiza with dwarf-Salix species. The dark colour of all parts of the carpophora and the exclusively encrusting pigment distinguishes it from other alpine Entoloma species.
Description type:Non-original description 
Description:Entoloma atrosericeum (Kühner) Noordel. (fig. 80)
Rhodophyllus atrosericeus Kühner, in Bull. trimest. Soc. mycol. Fr. 93: 454. 1977; Entoloma atrosericeum (Kühner) Noordel., Persoonia 11: 229. 1981.
Bibl.: Kühner in Bull. trimest. Soc. mycol. Fr. 93: 489-491. 1977; Noordeloos in Persoonia 12: 278-279. 1984; Noordeloos & Gulden in Can. J. Bot. 67: 1731-1732. 1989.
Holotypus: Herb. Kühner no. 69-3 10.
Pileus 20-35 mm broad, campanulato or hemispherical at first then expanding to convex, planoconvex or flattened, usually with small umbo, with margin inflexed then deflexed or straight, hygrophanous, when moist very dark brown almost black, not translucently striate or at margin only, slightly pallescent on drying, smooth, glabrous to rather coarsely radially fibrillose. Lamellae normally distant, adnate-emarginate, ventricose, very dark brown or brown-grey, almost as dark as pileus, then with pink tinges, with irregular, concolorous edge. Stipe 30-70 x 3-6 mm, cylindrical, sometimes slightly broadened towards base, dark brown to blackish brown concolorous with pileus, with fibrillose covering or not, then appearing almost polished, white tomentose at base. Context dark brown, brittle. Smell farinaceous. Taste farinaceous-rancid.
Spores 8.0-10.0 x 6.5-9.0 µm, Q= 1.0-1.2, subisodiametrical, 5-7-angled in side-view. Basidia 4-spored, clamped. Lamella edge fertile. Cystidia absent. Pileipellis a cutis of narrow, cylindrical hyphae, 2-7-µm wide. Pigment coarsely encrusting in all parts of carpophora. Clamps abundant in all tissues.
Habitat: in alpine snow-beds with Salix herbacea, and other dwarf-Salix spp., also found in Dryas-heath; summer-autumn.
Distribution: in alpine regions of northern and central Europa, rare?

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