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 Add this item to the list  Entoloma lepiotosme (Romagn.) Noordel.
Page number:1072 
Remarks (internal):Originally it was ranged in stirps Asprellum, on account of the lack of blue tinges in the pileus, but with the current knowledge, it may be better placed in stirps Corvinum. Entoloma caeruleum comes close, but differs by the collybioid habit and different colour-changes during the development of the fruitbodies; microscopically it is distinct on account of the sterile lamella edge, and it has a different ecology, growing in grassland and peat bogs. Entoloma atrocoeruleum differs among other things by the fibrillose stipe surface. 
Description type:Non-original description 
Description:Entoloma lepiotosme (Romagn.) Noordel.
Icon. e bibl.: Münzmay in Z. Mykol. 63: 35-40. 1997; Münzmay in Tintling 34: 48. 2003.
Pileus 10-30 mm, very variable, conical, campanulate, hemispherical to convex, usually with small, central umbo (papilla), but occasionally slightly umbilicate, with involute then deflexed margin, not hygrophanous, at first not translucently striate, but in old fruitbodies becoming slightly translucent, very dark blackish brown, frequently tinged blue, or blue-black, blackish-violaceous, grey-blue, grey-violaceous, sometimes loosing the blue tinge with age, and becoming brown or sepia, entirely finely tomentose or, less frequently tomentose-squamulose and radially fibrillose, in dry weather radially fibrous-fissured. Lamellae, L = (12-) 17-23, l = -3, distant to moderately distant, ascending-adnate, emarginate with short decurrent tooth, normally thick or thickish, rarely weakly anastomosing, arcuate then segmentiform, when old subventricose, cream-coloured, then pink to brownish pink, when old often with reddish spots, with irregular, concolourous edge. Stipe 38-66 x 1.5-2.5 mm, cylindrical, rarely compressed, indigo-blue when young, then blue-grey, steel blue, grey-blue, rarely with green tinge, apex pruinose, at base white tomentose, rest polished, glabrous. Context in pileus and stipe blue, then grey. Smell spermatical, both fresh and cut or reminiscent of Lepiota cristata. Taste unpleasant, rancid-farinaceous.
Spores 9.0-11 x 6.0-8.0 µm, Q = 1.2-1.6, heterodiametrical, 6-8-angled in side view. Basidia 35-50 x 10-13 µm, 4-spored, clampless. Lamella edge fertile. Cystidia absent. Pileipellis a cutis with transitions to a trichoderm, made up of inflated elements, 20-70 x 10-25 µm. Pigment intracellular in pileipellis and trama. Clamp-connections absent.
Habitat and distribution: terrestrial, often on bare, black soil, in deciduous, river-plain forest. So far know from a few localities in France, Norway and Germany.
Thomas Münzmay (1997) published an emended description of this remarkable species based on long-term observations over a period of several years. This study revealed that Entoloma lepiotosme is much more variable than originally conceived, particularly in the expression of blue pigments in the basidiocarps. Münzmay found fruitbodies with striking blue pilei as well as the brown type as described by Romagnesi (1954) and Noordeloos (1992). The photos presented here clearly illustrate the variability of the species concerned. Its taxonomic position has therefore become a bit more problematical. The smell, distinctive as it was to Romagnesi, probably is only discernable in young, freshly collected fruitbodies, and disappears quickly after collecting.
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