How to identify it?
Cap
Cap 2-8 cm across, convex at first, becoming flatter with age; lemon-yellow, or sometimes white; surface sticky, soft. Flesh soft, white. Odour and taste not distinctive.
Gills
Gills free, white, becoming yellowish, close or crowded.

Scientific Classification

Phylum
Club fungi Class
Mushroom-forming fungi Order
Gilled fungi Family
Amanita Genus
Amanita mushrooms Species
False death cap