Amanita \Am`a*ni"ta\, n. [NL. See {Amanitine}.] (Bot.)
A genus of poisonous fungi of the family {Agaricace[ae]},
characterized by having a volva, an annulus, and white
spores. The species resemble edible mushrooms, and are
frequently mistaken for them. {Amanita muscaria}, syn.
{Agaricus muscarius}, is the fly amanita, or fly agaric; and
{Agaricus phalloides} is the death cup (or death cap).
[Webster 1913 Suppl.]