Psathyrella reticulata (Romagn.) M.M. Moser ex Singer

Diagnosis fuente: PERSOONIA - Suplement - Vol. 2 - THE DUTCH, FRENCH AND BRITISH SPECIES OF PSATHYRELLA - 1985 E. KITS VAN WAVEREN - Rijksherbarium, Leiden, The Nederlands
Cap 5—15 mm, at first campanulate-umbonate, then campanulate or glandiform, fairly fleshy and thick, obtuse, its margin more or less warped or lobed, provided with a few vertical folds giving cap a sulcate and sometimes almost crenate aspect, while fresh with strongly wrinkled surface (except for centre), not striate, vivid ochre-yellow, browner at centre, paler and sordid whitish ochraceous at margin. Veil practically absent (but found present on part of the apex in one collection). Gills 1.5-4 mm broad, at first fairly crowded, later more distant, with lamellules of two lengths, ascending, subventricose, adnate without tooth, brownish-greyish, slightly purplish, with coarsely pruinose white edge. Stem 50 x 2-3 mm, fairly straight, subcylindrical, not really thickened at base, hollow, finally very hollow, with smooth surface, very fragile, splitting longitudinally, hyaline-white but brownish below, at apex scarcely pruinose and not sulcate, towards base provided with a few small white fibrils. Flesh in cap fairly thick, fragile, reddish brown when moist, becoming paler on drying, in stem concolorous. Spore print brown-purple.

Spores 7.5—9 x 5—5.5 um (mean values: 8.7 x 5.2 um: 1 collection), remarkably subglobose, ellipsoid-ovoid, very dark, almost opaque, with small germ pore (see observations). (Basidia not mentioned.) Pleurocystidia (28—)38—46 x 12-14 um, utriform, with thick short neck, not capitate. Marginal cells: pleurocystidioid cheilocystidia, 25-43 x 10-12 um, smaller and sometimes more cylindrical than pleurocystidia, intermixed with a few small unobtrusive clavate cells. Hymenophoral trama sub micr. distinctly yellowish brown from membranal pigment. Pileipellis a layer of subclavate cells, 30-50 x 20-56 pm.
HABITAT & DISTRIBUTION. — In humid ground.