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Page number:995 
Remarks (internal):Entoloma jennyi is a very striking species that has no close relatives in Europe. The basidiocarps remind somewhat of a Russula species in the Griseinae group with its tender blue-grey to violaceous-blue tinges and free lamellae with hardly any lamellulae. The structure of the pileipellis, which is almost hymeniform place it in sect. Calliderma. Horak (1980) described some similar species from SE Asia, viz. Entoloma colombianum Corner & Horak, which is macroscopically more or less similar, but differs by having more isodiametrical spores, and very large, utriform cheilocystidia; E. divum Corner & Horak which differs by having a blue stipe, and more elongate, 5-7-angled spores; E. rugosopruinatum Corner & Horak which has similarly shaped, but smaller spores (7.5-8.5 x 6.0-7.5 µm), and a blue-green stipe; E. generosum Corner & Horak with different colours and more complex, almost cruciform spores. Entoloma callidermum (Romagn.) Noordel. from tropical Africa differs by having a more brown-tinged pileus and smaller spores. 
Description type:Non-original description 
Description:Entoloma jennyi Noordel. & Ten Cate, À–sterr.Z. Pilzk. 3: 29. 1994. (fig. 336)
Basidiomata in small groups. Pileus 40-70 mm, hemispherical soon convex, somewhat irregular, sometimes slightly depressed at centre or weakly umbonate, with involute then straight margin, not hygrophanous, not translucently striate, steel-blue when young then blue-violaceous, often darker blue at centre, very finely pruinose to almost glabrous. Lamellae, L = about 50-70, l = 0-1, fairly crowded, free or very narrowly adnexed, broadly ventricose, up to 10 mm wide, white then purely pink with more or less entire, concolourous edge. Stipe 25-50 x 9-13 mm, cylindrical, white or very pale yellow, innately fibrillose, smooth, glabrous. Context white. Smell and taste indistinct.
Spores 8.0-10.5 x 6.5-8.0 µm, average 9.0-10.0 x 7.0-7.5 µm, Q = 1.1-1.5, average Q = 1.2-1.3, mostly 5-, sometimes 6 (7)- or 4-angled, thin-walled. Basidia 25-40 x 10-15 µm, 4-spored, clamped. Lamella edge fertile. Cheilo- and pleurocystidia absent, but in some specimens hymenium very irregular, with fusiform to clavate basidioles between mature basidia. Hymenophoral trama regular, made up of relatively short, inflated elements, 50-110 x 10-30 µm. Pileipellis a true trichoderm with transitions to a hymeniderm, made up of clavate elements, 30-40 x 10-15 µm, interspersed with pileocystidia, up to 90 x 10-20 µm, fusiform to lageniform or with strangulate apex; transitions between "normal" elements and pileocystidia occur frequently. Pigment pale bluish brown, intracellular in pileipellis. Clamps present in all tissues.
Habitat and distribution: terrestrial on wet, peaty soil in Atlantic bog with Calluna vulgaris, Erica cinerea, Narthecium ossifragum, Potentilla erecta, and Polygala vulgaris. So far only known from a few localities in Ireland.
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