Tricholoma orirubens Quél. syn. T. horribile Rea. Tricolome ŕ marge rougissante, Rötlicher Erdritterling, Rózsáslemezű pereszke, Blozende ridderzwam. Cap 4–8cm across, conical then expanded with an acute umbo, dark grey often paler at the margin, covered in black cottony or felty scales. Stem 40–80 x 10–15mm, white becoming flecked with red often marked green or blue at the base, arising from pale sulphur yellow mycelium. Flesh white, eventually reddening. Taste not distinctive, smell strongly of meal. Gills white to greyish when young, then often turning pink and sometimes spotted. Spore print white. Spores broadly ovate to subglobose, 4–6.5 x 3–4.5um. Habitat in deciduous, or less frequently, coniferous woods. Season autumn. Rare. Edible with caution. (Never eat any mushroom until you are certain it is edible as many are poisonous and some are deadly poisonous.) Distribution, America and Europe.