Amanita virosa, also known as Destroying angel, is a lethally poisonous, medium large to large, white fleshy mushroom with a shaggy stalk and volval bag. It grows solitary or scattered on soil in broad-leaf or mixed woods. The mushroom contain a complex group of poisonous substances called amatoxins.
white to yellow in color, at first round to egg shaped, then flat but often retaining a flat umbo, usually with veil remnants at the margins. The flesh white and firm. Gills
white (can turn yellow), free, crowded. Stem
long and thread-like and has tufts above the ring and arising from large bag-like vulva often buried deep in the soil. The large ring sits high on the stem. Easily breaks and falls off and is produced by the inner veil.
Amanita bisporigera is a smaller, more slender, two-spored, but equally deadly mushroom. The mushroom can also be confused with edible Button mushrooms (Agaricus species). They have faint pink to brown gills, where Amanita virosa has white gills.
on the www.first-nature.com web site.