Champignon tabular (Agaricus tabularis)
Systematics:
- Department: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Agaricales (Agaric or Lamellar)
- Family: Agaricaceae (Champignon)
- Genus: Agaricus (Champignon)
- Species: Agaricus tabularis (Champignon tabular)
Tabular champignon (Agaricus tabularis) is very rare in the deserts and semi-deserts of Kazakhstan, Central Asia, in the virgin steppes of Ukraine, as well as in North America (in the deserts of Colorado). Finding it in the steppes of Ukraine is the first finding of this mushroom on the territory of the European continent.
External description
Hat 5-20 cm in diameter, very thick, fleshy, dense, semicircular, later convex-outstretched, sometimes flat in the center, whitish, whitish-gray, turns yellow when touched, cracking in the form of horizontally arranged parallel rows of deep pyramidal cells, tabular-cellular , tabular-fissured (pyramidal cells are often covered with small adpressed fibrous scales), sometimes smooth to the edge, with a tucked, later wavy, spreading edge, often with remnants of a veil.
The flesh of the tabular champignon is white, above the plates and at the base of the leg does not change with age, or it turns slightly pink, turns yellow when touched, turns yellow when dried in the herbarium.
The spore powder is dark brown.
The plates are narrow, free, black-brown in maturity.
The stem of the tabular champignon is thick, wide, dense, 4-7×1-3 cm, central, cylindrical, even, slightly tapering towards the base, made, white, whitish, silky-fibrous, glabrous, with a simple wide apical lagging behind, later drooping, whitish, smooth above, fibrous ring below.
