Original diagnosis Description: Pileus 2 3 mm broad, campanulate, then convex, sometimes slightly umbilicate, radially plicate, not hygrophanous. not translucently striate, white, at centre sometimes tinged brown, dull, entitely pruinose. Lamellae distant, L= 7-12,1= 1 3, adnate-decurrent, sometimes loosening from stipe forming a pseudocollarium, segmentiform, pale pink. Stipe 2 5 x 0.3 mm. eylindrical,curved, eream-coloured, more brown at base, entirely white pruinose, white strigose at base with white radiating hairs. Context concolorous with surface. Smell none. ‘Taste not known. Spores 11 16.5 x 4.5 6.5 um, F=2.1-2.8(3.2),0= 2.0, ellipsoid to lacrymoid, thin-walled. Basidia2742 x 9.0-12.5 um, 4-, rarely 2-spored, clavate, clamped, Basidioles 18,5 33 x 3.5 11.5 um, broadly clavate or sublusiform, clamped. Lamella edge sterile. Cheilocystidia 22.5-50 x 5.0-11 pm, versiform from cylindrical-capitate to irregularly coralloid with finger-like projections or one or more bladder-like swellings at apex. Pleurocystidia absent. Hymenophoral and pileitrama regular, made up of inflated hyphace, elements 30-90 x 8.0-20 (25) pm, intermixed with 4.0-10 yum wide cylindrical hyphae. Pileipellis a cutis of4.0 12 (18) yim wide, inflated hyphae with coralloid to diverticulate endings. mixed with pileocystidioid capitate elements, 21.5-53 x 3.5-12 um wide, Stipitipellis a cutis with numerous cylindrical and capitate or coralloid to diverticulate, thin-walled, hyaline, clamped caulocystidia, 20-48 x 2.0-8.0(10) pm. Clamps abundant in all tissues. Chemical reactions: Spores amyloid, trama in part of basidiocarp dextrinoid. Ecology: On branchlets of herbs and serubs (Calamagrostis epigeios, Calluna vulgaris, Carex sp., Rubus spp., Empetrum nigrum, Juncus spp., Lvsimachia sp., Phragmites australis, grasses, ete,),
