Hottonia inflata

from WordNet (r) 3.0 (2006)

Hottonia inflata
    n 1: a featherfoil of the eastern United States with submerged
         spongy inflated flower stalks and white flowers [syn:
         {water gillyflower}, {American featherfoil}, {Hottonia
         inflata}]

from The Collaborative International Dictionary of English v.0.48

Water feather \Wa"ter feath"er\ Water feather-foil \Wa"ter
feath"er-foil`\ (Bot.)
   The water violet ({Hottonia palustris}); also, the less showy
   American plant {Hottonia inflata}.
   [1913 Webster]

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