Tricholoma saponaceum - Hat diameter 40 to 80 (120) mm. Changeable color: white-gray, olive, brown, gray-brown, gray-green, gray-black, blackish - dark forms have a lighter edge. Convex in young sporocarps, outstretched in mature ones. The surface is rather dry, slightly sticky when moist, smooth, less often with small scales, it can be cracked. The margin in young fruiting bodies is incurved, in older it is irregularly folded.
Lamellae 8 to 12 mm wide, rare, waxy, cream to yellowish greenish, sinus dissected.
Blade 45 to 80 (100) mm long and 15 to 30 (35) mm thick. Cream-colored, whitish or grayish damaged pink after some time, especially at the base. Cylindrical in shape, even, may be bent, less often squat. Surface smooth or long cream-gray fibrils on a creamy background.
Whitish flesh, after some time becoming red or pinkish, especially in older mushrooms. The smell of gray soap (lye) depends on the age of the fungus and the weather (not always well noticeable). Mild but unpleasant to bitter taste (sometimes associated with flour).
Occurrence: In coniferous and deciduous forests. Quite often, it grows in clusters, appears from September to November.
Value: Inedible mushroom, poorly poisonous. In larger quantities it may cause nausea and vomiting.