Definition that contains polypod
- adiantum cosmopolitan genus of ferns: maidenhair ferns; in some classification systems placed in family Polypodiaceae or Adiantaceae
- asplenium in some classification systems placed in family Polypodiaceae
- polypody any of numerous ferns of the genus Polypodium
- acrostichum in some classification systems placed in family Polypodiaceae
- adiantaceae used in some classification systems for some genera of the family Polypodiaceae (or Pteridaceae)
- aspleniaceae one of a number of families into which Polypodiaceae has been subdivided in some classification systems; includes genera Asplenium, Pleurosorus, Schaffneria
- athyriaceae alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
- athyrium temperate and tropical lady ferns; in some classifications placed in family Polypodiaceae or in the genus Asplenium
- blechnaceae one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; includes genera Blechnum, Doodia, Sadleria, Stenochlaena, and Woodwardia
- blechnum in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns