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Page number:900 
Remarks (internal):Entoloma anthracinellum is a very distinctive species with its relatively narrow, elongate spores and dark colours. Entoloma atrosericeum comes close, but has isodiametrical spores and numerous clamp-connections. Both species certainly have been named Entoloma sericeum in the past. That species, however, differs in a number of characters, such as structure of hymenophoral and pileal trama. 
Description type:Non-original description 
Description:Pileus 10-35 mm broad, conical to campanulate, expanding to convex or applanate, usually with small umbo, with deflexed to straight margin, hygrophanous, when moist translucently striate up to half the radius, very dark grey-brown to blackish brown, slightly pallescent on drying, smooth, glabrous or innately radially fibrillose when dry. Lamellae rather crowded, broadly adnate with decurrent tooth, sometimes deeply emarginate to almost free, grey to brown grey then with colour almost like pileus, hardly pink when mature, with concolourous edge. Stipe 10-35 x 1-4 mm, cylindrical or somewhat flattened, concolourous with pileus or paler, glabrous and polished or with some sparse white longitudinal fibrils. Context concolourous with pileus or paler than surface. Smell weak, sometimes slightly farinaceous. Taste farinaceous.
Spores 7.5-12.5 x (5.5-) 6.0-10.0 µm, Q = 1.1-1.3-1.4, (broadly) ellipsoid, 5-8-angled in side-view. Basidia 25-40 x 7.2-11.7 µm, 4-spored with clamp. Cystidia none. Hymenophoral trama regular, made up of rather short, cylindrical elements, 50-180 x 11-27 µm, interspersed with narrow cylindrical hyphae, 3-8 µm wide with minutely asperulate-encrusted walls. Pileipellis a cutis of 4-8.5 µm wide, cylindrical hyphae with scattered clavate terminal cells up to 15 µm wide. Pigment coarsely encrusting the hyphae of pileipellis and pileitrama. Pileitrama regular, made up of short, inflated cells, 42-90 x 10-20 µm, with coarsely encrusted, sometimes slightly thickened walls. Clamp-connections absent from all tissues, except for the hymenium where they are rather abundant.
Habitat and distribution: among mosses (Sphagnum or other moss) in moist Dryas or Vaccinium heaths or in snow-bed vegetations (Ranunculeto-Oxyrion). Widespread in alpine and arctic areas of Northern Europe.
 
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