Fly amanita \Fly amanita\, Fly fungus \Fly fungus\ . (Bot.)
A poisonous mushroom ({Amanita muscaria}, syn. {Agaricus
muscarius}), having usually a bright red or yellowish cap
covered with irregular white spots. It has a distinct volva
at the base, generally an upper ring on the stalk, and white
spores. Called also {fly agaric}, {deadly amanita}.
[Webster 1913 Suppl.]