Poisonous amanita, also known as green hat fungus, amanita fungus, garlic leaf fungus, Agaricus blazei, and poisonous umbrella. Also known as "death cap" abroad. The fruiting body is generally of medium size, with smooth surface, nearly ovoid to bell-shaped at the initial stage, and the surface is grayish brown-green, smoky grayish brown to dark green-gray. Mushroom meat is white. The fungus fold is white, the stalk is white, slender, cylindrical, the base expands into a ball, and the inside is soft to hollow. Volvariella is large and thick, bract-like and white. The microflora is white, and the upper part of the stalk is raw. In summer and autumn, it grows singly or in groups in broad-leaved forest.