Lepiota sharp-scaled (Echinoderma asperum)
- Department: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Agaricales (Agaric or Lamellar)
- Family: Agaricaceae (Champignon)
- Genus: Echinoderma (Echinoderma)
- Species: Echinoderma asperum (Lepiota sharp-scaled)
- Other names for the mushroom:
- Umbrella sharp-flaked
- Umbrella grungy
- Lepiota rough
The cap of the sharp-scaled lepiota is first bell-shaped, then umbrella-shaped with a protruding tubercle, with a diameter of 5-10 cm. The color is light rusty-brown. The surface of the cap is covered with pyramidal, bristly, pointed, large scales, brownish brown, darker than the color of the cap.
The plates of the sharp-scaled lepiota are very frequent, free, wide, frequent, white, when pressed and turn brown with age.
The leg of the sharp-scaled lepiota is even, 8-12 cm long and 1-1.5 cm in diameter, cylindrical with a swollen base, dense, smooth at the top, light, yellowish-brown below the ring, ocher-brownish, fibrous-scaly, at the base with brownish concentric scales. The ring is wide, thin, filmy, with a cobweb veil when separated, white, cream, with ocher warts on the underside.
The pulp is white, friable, with a nasty smell and taste.
Umbrella sharp-flaked grows from mid-August to late September (massively in the first half of September), in mixed forests, on rich soil, on rotten debris, near roads, outside the forest, in parks, on lawns, singly and in groups, not often. Found in Europe and North America.
A sharp-flaked umbrella is considered an inedible mushroom due to an unpleasant odor and a bitter taste (a decoction with an unpleasant resinous odor, and after cooling with a weak berry-fruit odor, when boiled, it emits a smell of burnt plastic or old fish oil, pulp of medium taste). According to some foreign sources, it is deadly poisonous.
It differs from other terrestrial lepiots of our forests in size and bent, protruding scales.