The size of this mushroom can range from 7 to 15 cm in diameter. Its stipe is very bulbous (up to 5 cm in diameter) at the bottom, unlike Macrolepiota rhacodes or Macrolepiota procera. The stipe is shorter and thicker, and the middle of the cap is covered with very flat, sometimes cog-wheel shaped, brown scales. When bruised, the flesh turns to orange, later - to red-brown. Spore powder is white. This mushroom grows on ant-hills and in hothouses from August to October. It is rare in Latvia. Slightly poisonous.

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