|any of various saprotrophic agaricaceous fungi constituting the genus Amanita, having white gills and a broken membranous ring (volva) around the stalk. The genus includes several highly poisonous species, such as death cap, destroying angel, and fly agaric|
|[C19: from Greek amanitai (plural) a variety of fungus]|
Amanita Am·a·ni·ta (ām'ə-nī'tə, -nē'-)
A genus of mushrooms with many highly poisonous species.