ipomoea purpurea

from WordNet (r) 3.0 (2006)

Ipomoea purpurea
    n 1: pantropical annual climbing herb with funnel-shaped blue,
         purple, pink or white flowers [syn: {common morning glory},
         {Ipomoea purpurea}]

from The Collaborative International Dictionary of English v.0.48

Morning-glory \Morn"ing-glo`ry\, n. (Bot.)
   A climbing plant ({Ipomoea purpurea}) having handsome,
   funnel-shaped flowers, usually red, pink, purple, white, or
   variegated, sometimes pale blue. See {Dextrorsal}.
   [1913 Webster]