Descripción original Description: Pileus 2-8 mm broad, campanulate at first, soon convex to applanate, truncate becoming umbilicate with age, eventually funnel-shaped, purely white, not umbilicate with age, eventually funnel-shaped, purely white, not translucently striate, glabrous. Lamellae distant, L.= 9 10, 1 > 0, arcuate, strongly decurrent, vein-like, usually not reaching the margin of the pileus, sometimes reaching only halfway pilcus, white. Stipe up to 20 x 0.3-0.5 mm, cylindrical, filiform, sometimes broadening towards apex, white, hyaline. finely pruinose all over, at base with up to 0.4 mm long, hyaline, strigose hairs. Smell none. Spores &.0—12 x (2.5) 3.0-4.5 pm, E = 2.44.0, Q = 2,7-3.4, subfusoid, cylindrical to somewhat tapering towards pronounced apiculus, Basidia 16-26 x 4.0-7.5 tm, 4-spored, less frequently mixed with 2-spored, clavate, clamped. Lamella edge [ertile. Cystidia absent. Hymenophoral trama of inflated elements, 10-22 jum wide. Pileipellis a cutis made up of diverticulate hyphae, 2,5—9 jum wide with abundant wart- to finger-like, simple, rarely branched, up to 8.0 x 2.0 jum large excrescencies. Stipitipellis a cutis of narrow, cylindrical, smooth, 3.0-8.0 jum wide hyphae. Caulocystidia single or Stipitipellis a cutis of narrow, cylindrical, smooth, 3.0-8.0 jum wide hyphae. Caulocystidia single or in clusters, 1O-40 x 2.0-6,0 jum, subeylindrical, larger ones often flexuous, with rounded, sometimes subcapitate apex, denser towards base. Clamp-connections abundant in all parts of basidiocarp. Chemical reactions: Neither spores nor tissues amyloid or dextrinoid. Ecology: Saprotrophic on dead leaves and stems of grasses; on leaf-sheaths of /iwtcus sp. and Scirpus lacustris, in lawns, marches ete,, and on leaves of Carex and Poaceae in open grasslands and open Cariceta stands (KREISEL et al. 1987).
