Tricholoma colossus

Tricholoma colossus is a mushroom of the agaric genus Tricholoma. Due to its ringed foot, it was previously classified as Armillaria, even though it is otherwise clearly tricholoma. The cap is 6-30 cm wide, brick red - chestnut brown, hemispherical when young, widening later on, uneven, always with very thick meat, surface slightly sticky, decomposing somewhat into scales. Foot is full, 2-5 (at the stem even 10) cm thick, solid. Ring-like formation at the top of the foot, above which it is white. Taste horrid, smell unclear. Grows in pine forests September-October; very rare.