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Page number:1014 
Remarks (internal):Although Entoloma ritae reminds of a Leptonia species, particularly because of the polished stipe, it is better ranged in subgenus Alboleptonia on account of the simple structure of the pileipellis and the abundant clamp-connections in the fruit body. It fits well in sect. Roseicaules (Largent & Benedict 1970). All other European species with pink colours differs by the lack of clamp-connections, and typically belong to sect. Cyanula of subgenus Leptonia. Entoloma roseum and E. catalaunicum have a pink or blue stipe, and differently shaped spores and cystidia. Entoloma ianthinum has a violaceous-pink pileus and stipe and lacks cystidia. Entoloma roseotinctum is much paler than E. ritae and differs also microscopically. Entoloma lilacinoroseum, a rare species from subgenus Inocephalus, has clamp-connections, but differs macroscopically by the fibrillose rather than tomentose pileus, fibrillose stipe, capitate cystidia and smaller spores. 
Description type:Non-original description 
Description:Entoloma ritae Noordel. & Wölfel in Boll. Gruppo Micol. G. Bres. 40 (2-3): 491. 1997. (fig. 342)
Pileus 8-16 mm broad, convex when young, expanding with age with flattened sometimes distinctly umbonate centre, bright pink then pinkish brown (K&W 6C4), not hygrophanous, not translucently striate, finely tomentose-subsquamulose all over, glabrescent with age, finally almost glabrous. Lamellae normally spaced to distant, deeply emarginate-adnate, almost free, purely white then pink with entire or slightly eroded, concolourous edge. Stipe 22-35 x 1-1.5 mm, cylindrical, fistulose, pale yellowish, glabrous, polished, at base with some white tomentum. Smell and taste indistinct.
Spores (8.0-) 8.5-12.0 (-12.5) x 6.5-9.0 (-9.5) µm, Q = 1.2-1.7, Qav = 1.5, very variably shaped from regularly 5-6-angled to 6-8 angled-nodulose, with pronounced angles, fairly thick-walled. Basidia 32-50 x 10-16 µm, 4-, rarely also 2-spored, clavate, clamped. Lamella edge heterogeneous. Cheilocystidia single or in groups among basidia, 25-55 x 5.0-20 µm, cylindrical, clavate or lageniform, with rounded apex, thin- or basally slightly thick-walled. Hymenophoral trama regular, made up of cylindrical or slightly inflated, up to 30 µm wide hyphae with abundant brilliant granules. Pileipellis a cutis with transitions to a trichoderm, terminal elements 20-70 x 6.0-17 µm, with intracellular pigment. Pileitrama regular, made up of inflated elements, up to 33 µm wide with brilliant granules. Clamp-connections abundant.
Habitat and distribution: among grasses in a subalpine meadow on calcareous soil. So far only known from the type locality in Italy.
 
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