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Page number:203 
Remarks (internal):Entoloma nausiosme is a very remarkable species with its dark, omphalioid fruit-bodies, fibrillose to subzonate pileus, very strong smell (it can be noticed before being seen), and large cheilocystidia 
Description type:Non-original description 
Description:Entoloma nausiosme Noordel. (tav. 21 a, fig. 112)
Entoloma nausiosme Noordel., Beih. Nova Hedwigia 91: 96. 1987.
Sin.: Entoloma odoriferum var. obscurum Lohmeyer & Noordel., Int. J. Mycol. Lich. 1: 50. 1981.
Bibl.: Schmidt-Heckel, H. Forschungsber. Natpk. Berchtesgaden 8: 139. 1985.
Pileus 10-40 mm broad, convex with depressed to deeply umbilicate centre, with involute margin, weakly hygrophanous, when moist dark grey to almost black, not translucently striate, slightly pallescent to grey-brown on drying, usually fairly strongly radially fibrillose­felted, rarely almost glabrous when moist, but becoming rather strongly radially fibrillose­felted when dry, sometimes subzonate. Lamellae arcuate-decurrent, dark grey then with brownish-pink tinge, with entire, concolorous edge. Stipe 20-70 x 2-7 mm, cylindrical or tapering downwards, concolorous or slightly paler than pileus, smooth, pruinose at apex, downwards polished, base white tomentose. Context thin, more or less concolorous with surface. Smell very strong, difficult to describe: like burnt meat with an aromatic component, ('maggi') or burnt rubber; rather unpleasant. Taste very unpleasant rancid.
Spores 9.0-11.5 x 7.0-9.5 µm, Q= 1.2-1.4, heterodiametrical, 5-7-angled in side-view. Basidia 4-spored, clamped. Lamella edge sterile or heterogeneous. Cheilocystidia 30-100 x 8-30 µm, (broadly) clavate to globose or spheropedunculate, clamped. Pileipellis a cutis of up to 9 µm wide, cylindrical hyphae, at centre sometimes with more or less ascending, clavate terminal elements, 30-90 x 10-20 µm. Pigment brown, intracellular in pileipellis and upper pileitrama. Clamps abundant in all tissues.
Habitat: terrestrial in moist places in mixed deciduous forest, often on more or less peaty soil, found under Alnus, Betula, Salix and Quercus; summer-autumn.
Distribution: Rare in central Europe. Found in Austria and S. Germany.

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