A robust pale greyish blue mushroom. Pileus: 30-50 mm, conical then conico-convex, hardly expanding with age, with the margin bent downwards, rather pale greyish blue sometimes with slight brown tinge, losing its blue colour almost entirely with age, then pale greyish brown, smooth or very slightly innately fibrillose. Gills: crowded, adnate-emarginate, white then pink with serrulate, concolorous edge. Stem: 20-45 x 10-18 mm, clavate, almost white, with faint blue or bluish grey tinge, innately fibrillose, base white, sometimes with yellow tinges. Context thick, white, smell and taste weak, slightly floury. Spores: 7.4-9.4(10.8) x 6.7-9.7 μm, average 8.2 8.3 μm, Q = 1.01.2, Qav = 1.01, isodiametric to subisodiametric, thin-walled, 7-10 angled in side-view. Basidia: (37)48-70(85) x 11-14.5 μm, clavate to oblong, clamped, 2- and 4-spored. Pileipellis: in the centre is an very gelatinous ixocutis made of narrow cylindrical hyphae ranging 20-74 x 25 μm; in the middle of the radius is an ixocutis but with transitions to an ixotrichoderm, made of narrow cylindrical hyphae ranging 25-113 x 3-9 μm; subpellis not differentiated.