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Page number:290 
Remarks (internal):Entoloma infula and E. chlorinosum are very close. I have studied many collections of the latter from Sweden and the alps, and carne to the conclusion that the differences are very small indeed. In particular the presence of incrusting pigments in most of the collections (absent in the type material, see Noordeloos in Persoonia 10: 507. 1980), it was decided to consider E. chlorinosum as a variety of E. infula with nitrous smell, and probably a preference for subalpine meadows.
Description type:Non-original description 
Description:Entoloma infula var. chlorinosum (Arnolds & Noordel.) Noordel. comb. nov. (tav. 36c)
Basionymum: Entoloma chlorinosum Arnolds & Noordel. in Persoonia 10: 287. 1979
Icon.: Arnolds & Noordeloos in Fung. rar. Ic. col. 12, pl. 90b. 1981; Senn-Irlet in Arctic Alpine Fungi 3: 35. 1990.
Bibl.: Courtecuisse in Docum. Mycol. 12(48): 47-50. 1983; Noordeloos in Persoonia 10: 507, fig. 36. 1980; Senn-Irlet, Arctic Alpine Fungi 3: 35-36. 1990.
Holotypus: E. J. M. Arnolds 3168, 24 Sett. 1974, Nieuwlanden, Burgwallen, Anloo, Drenthe, Olanda (L, isotype in WBS).
Pileus 7-35 mm broad, conical to hemispherical then convex, usually with small papilla and slightly deflexed margin, hygrophanous, when moist translucently striate up to three-quarters of radius, dark yellow-brown or red-brown, smooth, glabrous or innately radially fibrillose, pallescent on drying. Lamellae, L = 12-25, l = 1-5, moderately distant, emarginate, ventricose, white then pink, with entire, concolorous edge. Stipe 20-45 x 1-4 mm, cylindrical or compressed, concolorous with pileus or paler, smooth, glabrous, polished, base white tomentose. Context white in inner parts, concolorous with surface in cortex. Smell persistently nitrous. Taste mild or rancido
Spores 7.0-10(-10.5) x 5.0-7.0 µm, 0= 1.2-1.5, heterodiametrical, 5-7-angled in side-view. Basidia 4-spored, clamped. Lamella edge fertile. cystidia absent. Pileipellis a thin cutis of narrow, cylindrical, 2-9 µm wide hyphae. Pigment intracellular and often also minutely encrusting in pileipellis and upper pileitrama. Clamps present.
Habitat: in semi-natural grasslands, rather frequently found in subalpine habitats, less often in the lowlands; summer-autumn.
Distribution: wide-spread in Europe.

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