three-leaved

from The Collaborative International Dictionary of English v.0.48

Three-leafed \Three"-leafed`\, Three-leaved \Three"-leaved`\, a.
   (Bot.)
   (a) Producing three leaves; as, three-leaved nightshade.
   (b) Consisting of three distinct leaflets; having the
       leaflets arranged in threes.
       [1913 Webster]

   {Three-leaved nightshade}. See {Trillium}.
      [1913 Webster]