Tricholoma bufonium - Hat up to 70 mm in diameter, initially semicircular with a tucked edge; wine red, wine red brown, purple brown, purple red, pinkish brown, from paler margin - sometimes yellowish or cream; dry, dull, slightly scaly; sharp edge.
Lamellae broad; light yellow, gray-yellow, olive-yellow; blade smooth.
Stem up to 80 mm high, cylindrical, at the base a club-like or pointed, fleshy, full, longitudinally fibrous; slightly flaky surface; sulfur-yellow, yellow-brown, sometimes slightly pinkish at the base.
Sulfur yellow flesh, reddish at the base. Flour flavor. Unpleasant odor: carbide, acetylene.
Occurrence: From summer to autumn, usually in the mountains and in hilly areas, in coniferous and mixed forests, especially under spruce trees. Likes acid soil. Uncommon.
Value: Inedible mushroom, slightly poisonous.