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Page number:124 
Remarks (internal):The non hygrophanous pileus clearly place this species in sect. Entoloma, where it takes a rather isolated position because of the dark brown pileus, ochraceous-grey and yellow tinges of the stipe and small spores. Entoloma singulare Romagn. is similar, but differs by having a translucently striate margin of pileus, differently coloured stipe with blue-violaceous tinges in base, and much larger spores. Entoloma pomaceum Velen. has a pale grey pileus and bluish tinges in the stipe, besides larger spores and an aromatical smell. It therefore is considered as clearly different from E. luteobasis. Entoloma porphyrophaeum has more or less similar tinges in the stipe, but differs in many other characters, like a trichodermal pileipellis, presence of capitate cheilocystidia, larger, many-angled spores etc. It belongs to subgenus Trichopilus.
 
Description type:Non-original description 
Description:Entoloma luteobasis Ebert & E. Ludwig (ined.) (tav. 73a, fig. 50)
Pileus 25-50 mm., conico-convex then convex with low, broad umbo, with involute margin, not hygrophanous, not translucently striate, dark sepia-brown, very slightly pallescent on drying, central part with dense, ochraceous-grey felty covering. Lamellae adnate-­emarginate, segmentiform, white then dark pinkish brown with coarsely serrate, concolorous edge. Stipe 60-80 x 8-14 mm, cylindrical, with clavate base, grey-porphyraceous, with yellow-ochraceous base, densely fibrillose with veil-like fibrils. Context white in base of stipe turning yellow. Smell and taste farinaceous.
Spores 6.0-8.0 x 6.0-7.0 µm, Q = 1.0 - 1.2. Basidia 4-spored, clamped. Lamella edge fertile. Cystidia absent. Pileipellis an ixocutis of narrow, cylindrical hyphae, 2-4.5 µm wide, subpellis well-developed, composed of short, broad elements, 20-50 x 10-40 µm. Pigment brown, intracellular. Clamps abundant.
Habitat: in mixed deciduous forest (Acer, Quercus, Fagus, Carpinus, Populus, on calcareous loam).
Distribution: So far only known from the type-locality in the Eiffel, Germany.


 
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