Russula albonigra (Krombh.) Fr. syn. R. anthracina Romagn. Schwarzweisser Täubling, Színváltó galambgomba, Russule blanc-noir. Cap 7–12cm across, flattened convex, later with a depression or saucer shaped, dirty white, very soon blackish brown to black, firm, slightly sticky, soon dry, somewhat thin-fleshed, three-quarters peeling; margin inrolled. Stem 30–60 x 15–30mm, concolorous with cap. Flesh white, blackening on exposure to air, or on bruising. Taste mild to slightly hot, slightly bitter. Gills slightly decurrent, narrow, arc-shaped, somewhat closely spaced, interspersed with numerous shorter ones, whitish to buff. All parts blacken on bruising or with age. Spore print white (A). Spores ovoid-elliptic, with small warts up to 0.4μ high, joined by fine lines to form a fairly well-developed network, 7–9 x 7–8μ. Cap surface of prostrate hyphae, 2–6μ wide; cystidia absent. Habitat under conifers and broad-leaved trees. Season summer to autumn. Occasional. Edible. (Never eat any mushroom until you are certain it is edible as many are poisonous and some are deadly poisonous.) Distribution, America and Europe.