Definition that contains family polypodiaceae
- dennstaedtia chiefly terrestrial ferns; in some classification systems placed in family Polypodiaceae
- family adiantaceae used in some classification systems for some genera of the family Polypodiaceae (or Pteridaceae)
- athyriaceae alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
- pteridaceae one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems; Pteridaceae is itself in turn sometimes further subdivided
- genus polypodium a genus of ferns belonging to the family Polypodiaceae and having rounded naked sori
- genus blechnum in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns
- genus davallia Old World tropical fern; in some classification systems placed directly in family Polypodiaceae
- family dryopteridaceae alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
- cheilanthes small evergreen ferns: lipferns; in some classifications placed in family Polypodiaceae or Adiantaceae
- phyllitis a genus of ferns belonging to the family Polypodiaceae (in some classification systems included in genus Asplenium)