Description: Medium agarics, gregarious close
to young oak tree. Pileus: Broadly convex to almost flat, brown
with whitish appendiculate velar remnants in
young specimens, dry, smooth, hygrophanous,
diameter 19-50mm. Stipe: White, pruinose, fragile, hollow, straight
but thickening slightly towards the base, 3-7mm
diameter, 40-61mm height. Gills: Adnexed, crowded, dark brown in colour.
Microscopy: Pileipellis: Two layers - an upper layer of
gelatinous globular elements with a lower layer
of interwoven hyphae. Occasional large globose
'pileocystidia' seen. Stipe: Fibrils present as interwoven hyphae
terminating in filamentous caulocystidia. Clamp
connections - not seen. Cheilocystidia: Present as bundles of
lageniform cystidia. Pleurocystidia: Uncommon, enlarged rounded. Gill trama: Regular centrally, subregular
towards the gill edge. Basidia: 2,3 and mainly 4-spored. Spores: Ellipsoid, smooth, dark brown with small
germ pore (1.1-1.4µm); L= 6.8-8.5µm, W =
3.8-4.6µm, Q=1.55-2.00, Qm=1.81