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Page number:299 
Remarks (public):Tricholoma stiparophyllum is distinguished from T. album by the larger fruit-bodies, the irregular pileus often with costate margin, the more regularly shaped, crowded lamellae, and its occurrence with Betula. Tricholoma lascivum has a more greyish-yellowish tinge in the pileus, distinctly larger spores, and occurs mainly with Fagus on rich soil. Agaricus stiparophyllus clearly refers to a large species with whitish-yellowish pileus, resembling T. acerbum, with strong smell and acrid taste. It is originally described from the Stockholm region. Karsten (1879) adopted it in the same concept as Tricholoma stiparophyllum (Fr.) P. Karst. From the original diagnosis there is no doubt that this is the same fungus described by Bon (1970) as T pseuäoalbum and as Tricholoma album by Lange (1935). Judging from the original diagnosis, Tricholoma raphanicum P. Karst. may also be synonymous. 
Description type:Non-original description 
Description:Tricholoma stiparophyllum (Lund in Fr.) P. Karst. - Fig. 1b, PIate 2
Tricholoma stiparophyllum (Lund in Fr.) P. Karst., Ryssl. Finl. Skand. Halföns Hattsvamp. (1879)
Agaricus stiparophyllus Lund in Fr., Monogr. Hymenom. Sueciae (1857) 29.
Tricholoma pseudoalbum M. Bon, Bull. trimest. Soc. myco]. Fr. 85 (1969) 486.
Misapplied. Tricholoma album sensu Fr., Ic. sel. Hymenomyc. 1 (1874) pl. 43; sensu J. Lange, Fl. agar. dan. 1 (1935) pl. 27D.
Selected icons. Breitenb. & Kränzl., Pilze Schweiz 3 (1991) 339, pl. 435; J. Lange., Fl. agar. dan. 1 (1935) pl. 27D (as T. album); Marchand, Champ. Nord. Midi 9 (1986) pl. 842 (as T. pseudoalbum); Riva, Tricholoma (1988) pl. 9 (as T. pseudoalbum).
Selected descriptions and figures. Breitenb. & Kränzl., Pilze Schweiz 3 (1991) 338.
Neotype (design. here): Sweden, Medelpad, Getberget near Borgsjö, 12 Sept. 1995, M. Christensen (MC 95114) (herb. L, isoneotypes in C, UPS).
Pileus 40-100 mm, conical, hemispherical or convex with involute to deflexed margin at first, expanding to plano-convex or applanate with low umbo or with depressed centre, with undulating marginal zone and deflexed to reflexed margin, almost white when young, soon with yellow-ochre or yellow-brown tinges (Mu. 10Y 6/8, 10YR 7-8/4-8), particularly at centre, often with brownish or ochre spots all over when old, rather smooth, glabrous or silky, margin usually distinctly costate, particularly in large mature specimens. Lamellae, L = 60-120, I = 39, moderately crowded to crowded, broadly adnate-emarginate or with small decurrent tooth, normally thick, regular, segmentiform to subventricose, white to cream-coloured or with pinkish tinge (10YR 8-7/2), with brownish spots and marks when old or bruised, with coarsely eroded, concolorous edge. Stipe 70-100 x 5-15(-30) mm, cylindrical, often with broadened base, sometimes tapering towards base, white or with yellow-ochre tinges like pileus, pruinose to subfurfuraceous at apex, innately fibrillose to fibrillose-tomentose below with concolorous fibrils. Context firm, white, sometimes with a yellow tinge (5 Y 8/8). Smell strong, perfumed like cheap soap or flowers, a bit chemical. Taste very nasty acrid sometimes mixed with bitter and farinaceous.
Spores 5.0-7.0 x 3.4-4.5 µm, Q = 1.2-1.8, av. Q = 1.4-1.5, broadly ellipsoid to oblong with rather large hilar appendage. Basidia 26-32 x 5.0-7.0 µm, 4-spored. Lamella edge fertile. Cystidia absent. Pileipellis a cutis of 2.5-7.0 µm wide cylindrical hyphae with cylindrical to subclavate terminal elements, 20-45 x 3.5-9.0 µm; subpellis not differentiated from pileitrama, made up of inflated elements, 18-45 x 3.0-11 µm. Pigment pallid, intracellular in piIcipellis. Stipitipellis a cutis of narrow, cylindrical hyphae, 2.5-6.0 µm wide. Caulocystidia scattered, simple, cylindrical or irregularly shaped, 15-35 x 3.0-5.0 µm with hyaline, colourless walls. Clamp-connections infrequent but present on many septa in pilei ad stipitipellis.
Habitat & distribution Ectomycorrhizal, usually associated with Betula, but also with Picea, Populus, Fagus and Quercus, in mixed deciduous and coniferous forests on mesic, sandy soils, sometimes on calcareous soil. Widespread and locally common in Europe, from the subarctic to the mediterranean.
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