Inocybe fuscodisca

easily characterized by the dark brown fibrillose disc against a pallid ground color. CAP 1-2.5cm, umbo dark brown, cap covered with dark brown to dull brown, radially flattened fibrils over a pale buff to whitish ground color; smooth and subviscid over disc, otherwise moist to dry. ODOR spermatic. GILLS attached, close, broad, whitish at first. STEM 4-7.5cm x 0.15-0.3cm, equal, somewhat bulbous at base; sheathed from base to ring zone with dark brown to olive-brown fibrils over a whitish ground color, pruinose at top. CORTINA fleeting. MICROSTRUCTURES spores 7-10 x 4.5-6 um, elliptic, occasional ones up to 12-13 um long from 2-spored basidia); pleurocystidia 45-65(77) x (12)14-22(30) um, mostly 50-55 x 16-20 um, ventricose above a slender pedicel, with cylindric or slightly tapering neck, moderately thick-walled, cheilocystidia of 2 kinds, some resembling pleurocystidia, others thin-walled, clavate, 18-33 x 10-13 um; apex of stem with abundant dense clusters of caulocystidia, some like the pleurocystidia in wall thickness, but clavate to fusoid, and up to 85 um long, others thin-walled, varying greatly in size and shape, mostly clavate, about 20-50 x 14-20 um, base with abundant tangled superficial hyphae bearing numerous cylindric or clavate terminal cells, no caulocystidia; clamp connections present on almost all septa.