Mariposa lily

from WordNet (r) 3.0 (2006)

mariposa lily
    n 1: any of several plants of the genus Calochortus having
         tulip-shaped flowers with 3 sepals and 3 petals;
         southwestern United States and Mexico [syn: {mariposa},
         {mariposa tulip}, {mariposa lily}]

from The Collaborative International Dictionary of English v.0.48

Mariposa lily \Ma`ri*po"sa lil`y\ [Sp. mariposa a butterfly + E.
   lily. So called from the gay appearance of the blossoms.]
   (Bot.)
   One of a genus ({Calochortus}) of tuliplike bulbous herbs
   with large, and often gaycolored, blossoms. Called also
   {butterfly lily}. Most of them are natives of California.
   [1913 Webster]