galanthus nivalis

from The Collaborative International Dictionary of English v.0.48

Snowdrop \Snow"drop`\, n. (Bot.)
   A bulbous plant ({Galanthus nivalis}) bearing white flowers,
   which often appear while the snow is on the ground. It is
   cultivated in gardens for its beauty.
   [1913 Webster]

   {Snowdrop tree}. See {Silver-bell tree}, under {Silver}, a.
      [1913 Webster]