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Page number:478 
Remarks (internal):Entoloma querquedula is distinguished on account of the olivaceous tinges in pileus and stipe when young and fresh, and the polished stipe. Entoloma serrulatum has dark blue pileus and stipe, and usually a fibrillose to subsquamulose stipe covering; Entoloma caesiocinctum has a brown, translucently striate pileus. Furthermore the collections studied of E. querquedula have slightly smaller and more simply shaped spores than in both other species mentioned.
 
Description type:Non-original description 
Description:Entoloma querquedula (Romagn.) Noordel. (fig. 216)
Rhodophyllus querquedula Romagn. in Rev. mycol. 19: 8. 1954; (Compl. Fl. anal. l); Leptonia querquedula (Romagn.) Orton in Kew Bull. 31: 711. 1976; Entoloma querquedula (Romagn.) Noordel. in Persoonia 11: 471. 1982.
Icon.: Romagnesi in Rev. Mycol. 20, pl. 3, fig. e. 1955.
Bibl.: Noordeloos in Beih. Nova Hedwigia 91: 212-214, fig. 66. 1987; Romagnesi in Rev. Mycol. 20: 77-78, fig. 24. 1955.
Pileus 10-50 mm broad, conico-convex or truncate-conical to hemispherical, expanding to convex, usually slightly to distinctly umbilicate, with involute then deflexed margin, not hygrophanous, not translucently striate or at margin only when old, very dark brown with blue-olivaceous tinge, especially at centre, entirely tomentose then radially fibrillose at margin and squamulose on disco Lamellae, L = 15-40, l = 3-7, adnate-emarginate, often with small decurrent tooth, arcuate to segmentiform, rarely ventricose, sordid white or tinged blue then grey-pink with contrasting, blue-black, serrulate edge. Stipe 20- 70 x 2-6 mm, cylindrical or compressed with groove, sometimes with broadened base, blue-grey at first then with distinct olivaceous-blue or glaucous tinges, glabrous or minutely pruinose at apex, rarely blue-flocculose at apex, base white tomentose. Context concolorous with surface in cortex, pallid in inner parts. smell and taste indistinct
Spores 8.5-10.5( -11.0) x 6.0-8.0(-9.0) µm, Q = 1.2-1.7, heterodiametrical, 5- 7-angled in side-view. basidia 4-spored, clampless. Lamella edge sterile, made up of a sterile strand of cylindrical to inflated hyphae along the edge of the lamellae, having dense clusters of inflated terminal elements 'cheilocystidia'. Cheilocystidia 35-115 x 5-20 µm, cylindrical to clavate with abundant blue, intracellular pigment Pileipellis a cutis with transitions to a trichoderm made up of inflated terminal elements, 10-25 µm wide. Pigment blue, intracellular in pileipellis. Clamps absent.
Habitat: In grass or moss, also in humus in mixed forest on moist soil, preferably on base­rich soils; autumn.
Distribution: Rare, but wide-spread in Europe, in the lowlands up into the montane zone.


 
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