tril·li·um /ˈtrɪliəm/
  白紫,桃色花輪生的有三葉之植物
  Tril·li·um n.  Bot. A genus of liliaceous plants; the three-leaved nightshade; -- so called because all the parts of the plant are in threes.
  ◄ ►
  trillium
       n : any liliaceous plant of the genus Trillium having a whorl of
           three leaves at the top of the stem with a single
           three-petaled flower [syn: wood lily, wake-robin]