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Page number:1103 
Remarks (internal):Clitocybula lacerata tends to have larger pilei and fruits in fewer numbers than C. oculus, C. abundans, or C. familia. The latter three usually are found in clumps of many basidiocarps.
Besides the spores typical of C. lacerata, Hesler 29181 had a few which were obovate and lacrymoid or bent and up to 12 long. I did not observe any 1- or 2-spored basidia, or other aberration, to account for these.
Description type:- 
Description:Clitocybula lacerata (Scop. per Pollini) Métrod, Rev. Mycol. (Paris) 17: 87. 1952. Figs. 1, 3, 4
Agaricus lacerates Scop. per Pollini, Fl. Veronensis 3: 636. 1824.
Collybia lacerata (Scop. per Pollini) Gillet, Les Hyménomycètes p. 310. 1874.
Fayodia lacerata (Scop. per Pollini) Singer, Ann. Mycol. 34: 331. 1936.
Collybia platyphylla ssp. lacerata (Scop. per Pollini) Konrad & Maublanc, Icones Selectae Fungorum, p. 242. 1939.
Pileus 2-6 cm broad, convex at first with an inrolled margin, expanding to broadly convex, disc soon depressed, margin becoming wavy, not striate but usually lacerate and incised, surface appressed radiate-fibrillose at least near disc, rimose at times, moist and subhygrophanous, grayish to grayish brown, fading to dingy pallid; context whitish, thin and fragile. Odor and taste not distinctive.
Lamellae adnate to short decurrent, subdistant or sometimes distant, broad near stipe but narrowed near pileus margin, usually venose and at times anastomosed, white or pallid-cream, cinerascent.
Stipe 1.5-5 cm long, apex 2-4 mm thick, equal or narrowed downward, curved often, hollow, surface glabrous, whitish then dingy to pale gray, sometimes concolorous with pileus when young, base with whitish mycelium.
Spores 6-8 x 4.5-5(-6) µm, elliptic to broadly elliptic in face view, often subovate in side view, smooth, amyloid, deposit white. Basidia 25-40 x 5.5-7(-9) µm, 4-spored. Cystidia absent on lamellae. Pileus cutis thin, hyphae cylindric, 3.5-7 µm in diam, hyaline or pale fuliginous, pilocystidia present (at least on disc), erect or recumbent, cylindric or clavate, 25.5-38 µm long, 6-12.5 µm, broad, pale fuliginous in KOH, pigment intracellular and in slightly thickened walls; context hyaline, hyphae cylindric or somewhat inflated, (4-)10-25 µm in diam, walls usually thickened (0.5-1 µm thick). Hymenophoral trama of parallel hyphae, cylindric or somewhat inflated, (4-)12-23 µm in diam, walls usually thickened. Oleiferous hyphae scattered in context and trama (± 3 µm in diam). Clamp connections present. Caulocysts rarely present, subclavate to clavate, hyaline, smooth, 24-62 µm long, 5-15 µm broad. Stipe hyphae mostly with thickened walls, cylindric or somewhat inflated.
Scattered, gregarious or subcespitose. On logs of conifers (spruce) or hardwoods (oak, birch), sometimes on soil or attached to buried wood. July into September.
Material examined. U. S. A. Idaho: Miller 1744 (VPI). Michigan: Smith 18726 (MICH). North Carolina: Smith 10152 (MICH). Tennessee: Hesler 9060, 17052, 23073, 29148, 29181 (TENN); Smith 10690, 10901 (MICH). Canada. Ontario: Smith 4161 (MICH).

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