amanita

from WordNet (r) 3.0 (2006)

Amanita
    n 1: genus of widely distributed agarics that have white spores
         and are poisonous with few exceptions [syn: {Amanita},
         {genus Amanita}]

from The Collaborative International Dictionary of English v.0.48

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.]