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Page number:903 
Remarks (internal):Entoloma philocistus has a strong resemblance to some of the small Entoloma species associated with dwarf shrubs in alpine and arctic regions, currently placed in sect. Pseudonolanea. But the habitat in Mediterranean shrub vegetation is very aberrant. Particularly Entoloma borgenii and E. bipellis are very close with regards to the dark colours and habit. Both differ by having isodiametrical spores and a less distinct intracellular pigment in the subpellis. Entoloma sordidulum is also similar, but paler, especially in the lamellae and stipe, and has only very slight intracellular pigment. Entoloma cistophilum, another species associated with Cistus, and with a wide distribution in the Mediterranean, clearly differs by the cuboid spores and lack of incrusting pigment. 
Description type:Non-original description 
Description:Entoloma philocistus Hauskn. & Noordel. in À–sterr. Z. Pilzk. 8: 13. 1999. (fig. 309)
Bibl.: Vila & Llimona, Rev. Catal. Micol. 24: 98. 2002.
Pileus 8-27 mm broad, flattened hemispherical to plano-convex with strongly involute margin and slightly depressed centre, hygrophanous, when moist translucently striate, when young and fresh dark brown (K&W 8F4, 7F5-7, 7EF5-6), paler lightly brown to reddish brown (67E4), sometimes also with slight olivaceous tinge, pallescent to pale olivaceous brown, glabrous. Lamellae crowded, narrowly adnate, sometimes emarginate, ventricose, when young beige grey, pale greyish pink then brownish pink with concolourous, entire edge. Stipe 6-25 x 2-3 mm, always shorter than diameter of pileus, cylindrical, grey-beige to grey-ochre, towards base darker brown, slightly fibrillose striate to glabrous. Context thin. Smell spontaneously weak, when crushed farinaceous. Taste farinaceous.
Spores 8.0-13.5 x (6.5-) 7.0-10.5 µm, average 10.5-11.0 x 7.5-8.5 µm, Q = 1.0-1.5-1.7, isodiametrical to heterodiametrical, irregularly 5-8 angled in side view. Basidia 27-42 x 6.0-13.0 µm, 4-spored, clamped. Lamella edge fertile. Cystidia absent. Pileipellis a cutis of narrow, cylindrical, 2-5 µm wide hyphae; subpellis well differentiated, made up of inflated elements, 20-90 x 5-12 µm. Pigment very dark brown, strongly incrusting and in addition in subpellis also intracellular. Pileitrama regular, made up of inflated elements, 40-90 x 7-16 µm, often minutely incrusted.
Habitat and distribution: terrestrial in Mediterranean shrub vegetation of Cistus salviifolius L. and C. crispus L. So far only recorded from Portugal and Spain.
 
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