KvW :
Spores (12.5-)13.5-17(-18) x 6.5-8(-9) µm (mean values 13.7-15.8 x 7.2-7.9 µm: 19 collections), ellipsoid but adaxially flattened, in water dark reddish brown (Mu. 10 YR 3/3, 3/4; 2.5 YR 3/2, 2.5/4), in KOH 10% scarcely darker and browner, in KOH 5% very dark greyish brown (Mu. 10 YR 3/2), subopaque, with large (2-2.5 µm) germ pore, varying from scarcely to quite distinctly eccentric from one collection to another and even between spores from one gill. Basidia (20-)22-40(42) x 11-15(-16) µm, spheropedunculate, 4-spored. Pleurocystidia absent. Marginal cells: versiform cheilocystidia very numerous, densely packed, either preponderantly (to almost exclusively) lageniform with long, fairly long or short, thin or thick, cylindrical or subcylindrical neck, sharply delimited from or gradually broadening towards ventricose cell body (40-77 x 10-27 µm, neck 5-10 µm wide); or preponderantly (to almost exclusively) small, ventricose, subutriform, utriform or subfusiform (30-55 x 15-20 µm); both forms normally occurring mixed, their mutual proportions varying from one collection to another and even within one specimen from one gill to another, while intermediate forms frequently occur; few to a fair number of spheropedunculate cells, often difficult to find, 10-30 x 7.5-22.5 µm; ± thin-walled, but walls of cystidia often very slightly thickened. Hymenophoral trama in NH4OH 10% sub micr. yellowish brown from membranal pigment in basal half, strongest at base, with numerous yellow hyphal septa and few encrustations. Pileipellis a monostratic palisadoderm, consisting of pedicellate, thin-walled, colourless, clavate cells, 50-65 x 15-25 µm, tapering towards their base into a slightly thick-walled, in NHOH 10% brown, sometimes slightly encrusted, at extreme base 5-8 µm thick pedicel; between cells of pileipellis fairly numerous scattered, thick-walled dark yellowish brown, 100-400 µm long setae, very gradually tapering from swollen base (6.5-9.5 µm) towards apex (2.5-3.2 µm).
