Definition that contains family polypodiaceae
- genus scolopendrium a genus of ferns belonging to the family Polypodiaceae (in some classification systems included in genus Asplenium)
- parkeriaceae coextensive with the genus Ceratopteris; sometimes included in family Polypodiaceae
- genus doodia in some classification systems placed in family Polypodiaceae; small terrestrial colony-forming ferns of Australasia
- family 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
- cryptogrammataceae one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
- dryopteridaceae alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
- adiantaceae used in some classification systems for some genera of the family Polypodiaceae (or Pteridaceae)
- polypodium a genus of ferns belonging to the family Polypodiaceae and having rounded naked sori
- genus pityrogramma terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae
- genus athyrium temperate and tropical lady ferns; in some classifications placed in family Polypodiaceae or in the genus Asplenium