Paxillus involutus (Fr.) Fr. Kahler Krempling Paxille enroulé Brown Rollrim. Cap 5–12cm across, ochraceous or fulvous with olivaceous flush at first becoming more rusty-brown and finally hazel or snuff brown, viscid at centre when wet, downy throughout particularly at margin which remains inrolled, becoming smooth later. Stem up to 75 x 8–12mm, concolorous with cap becoming stained chestnut especially with age or on bruising. Flesh pale ochre in cap, fulvous in stem base, darkening on cutting. Taste acidic, smell fungusy. Gills decurrent, crowded, pale ochre then sienna, bruising vinaceous or chestnut. Spore print sienna. Spores ellipsoid, 8–10 x 5–6um. Habitat in broad-leaved woodland, especially with birch on acid heathland. Season late summer to late autumn. Very common. Deadly Poisonous – After eating over a period it has been known to cause death. Distribution, America and Europe.