Tricholoma portentosum (Fr.) Quél. Schwarzfaserger Ritterling Tricolome prétentieux. Cap 5–10cm across, conical to bell-shaped, expanding with a broad umbo, light grey to grey-black covered in fine radiating innate streaks often with olivaceous or violaceous tints. Stem 40–100 x 10–20mm, white, often becoming flushed lemon-yellow. Flesh white. Taste and smell mealy. Gills white then lemon-yellow. Spore print white. Spores 5–6 x 3.5–5um. Habitat with conifers. Season autumn. Occasional. 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.