资料来源 : WordNet®

family Polypodiaceae
     n : ferns: a large family that in some classification systems
         has been subdivided into several families (including
         Aspleniaceae and Blechnaceae and Davalliaceae and
         Dennstaedtiaceae and Dryopteridaceae and Oleandraceae and
         Pteridaceae) [syn: {Polypodiaceae}]