adiantum
  石長生屬植物
  Ad·i·an·tum /ˌædɪˈæntəm/ 名詞
  Ad·i·an·tum n.  Bot. A genus of ferns, the leaves of which shed water; maidenhair. Also, the black maidenhair, a species of spleenwort.
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  Adiantum
       n : cosmopolitan genus of ferns: maidenhair ferns; in some
           classification systems placed in family Polypodiaceae or
           Adiantaceae [syn: genus Adiantum]