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Page number:908 
Remarks (internal):This collection, which resembles Entoloma sericeum, belongs to section Pseudonolanea in subgenus Entoloma on account of the type of spores, and structure of trama with abundant clamp-connections. Entoloma bipellis Noordel. & Borgen, is rather similar, but has an indistinct odour and paler colours of lamellae and stipe. Besides, Entoloma bipellis has only been found in arctic and alpine habitats, where it grows together with dwarf shrubs. 
Description type:Original description 
Description:Entoloma vindobonense Noordel. & Hauskn., sp. nov. (fig. 312)
Pileus 15-25 mm broad, convex with distinct, broad umbo, with deflexed margin, hygrophanous, slightly translucently striate at margin only, grey-brown with darker grey-brown centre, slightly pallescent on drying (K&W 7F3, 7-8F3, 7EF3-4 then 5CD3, 5B3), glabrous, somewhat micaceous. Lamellae crowded, narrowly adnate, segmentiform, brown-grey (7CD2) when young then grey-brown (7DE3) with irregularly eroded, concolourous edge. Stipe 18-32 x 2.0-3.5 mm, cylindrical or slightly broadened at base, brown at apex (6E3-4, 7E4), darker grey-brown to dark grey-brown towards base (7E3-7F3-5), at the apex finely pruinose, downwards slightly fibrillose striate. Context brown. Smell strong, oily-rancid (reminiscent the smell of E. hirtipes). Taste farinaceous to cucumber-like.
Spores 7.0-11 x 7.0-8.5 ?m, average 8.6 x 7.4 µm, Q = 1.0-1.4, Qav = 1.15, isodiametrical to subheterodiametrical in side-view, with 6-many irregular angles, slightly thick-walled. Basidia 27-40 x 5.0-11 ?m, 4-spored, clamped. Lamella edge fertile. Cystidia absent. Pileipellis a poorly differentiated cutis of narrow, 1.5-3.5 ?m wide hyphae, subpellis of slightly wider hyphae, 4.0-10 ?m wide, gradually passing into pileitrama. Pileitrama regular, made up of cylindrical to inflated elements, 15-90 x 4.0-15 ?m. Pigment abundant, coarsely incrusting in whole pileus and in hymenophoral trama; in addition also intracellular in upper layers of pileus but incrusting pigment predominant. Clamp-connections abundant in all tissues.
Habitat and distribution: in mossy xerophytic grassland. So far only known from the type locality in Austria.
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