Cortinarius (Telamonia) umbrinolens P.D. Orton syn. C. rigidus sensu Lange (illustrated 45% life size) Cap 1.5–4cm across, conical, becoming expanded and umbonate; dark brown when moist, especially at the centre, drying yellow-brown, with a pale edge; surface silky to matt. Stem 30–70×2–6mm; brown with a darker base; covered at first with the white, cottony veil, which forms distinct but short-lived zones. Flesh umber, drying lighter; smell strong, of rotten cloth. Gills adnate; distinct deep brown with a lighter edge. Spores 7.5–9.5×4.5–6¼, broadly elliptical. Spore print rust. Habitat in damp locations on deciduous heathland, usually with birch; autumn. Uncommon. Suspect avoid.