Source : Webster's Revised Unabridged Dictionary (1913)

Utricularia \U*tric`u*la"ri*a\, n. [NL.] (Bot.)
   A genus of aquatic flowering plants, in which the submersed
   leaves bear many little utricles, or ascidia. See {Ascidium},

Bladderwort \Blad"der*wort`\, n. (Bot.)
   A genus ({Utricularia}) of aquatic or marshy plants, which
   usually bear numerous vesicles in the divisions of the
   leaves. These serve as traps for minute animals. See
   {Ascidium}.

Source : WordNet®

Utricularia
     n : bladderworts: large genus of aquatic carnivorous plants;
         cosmopolitan in distribution [syn: {genus Utricularia}]