Definition that contains family polypodiaceae
- genus acrostichum in some classification systems placed in family Polypodiaceae
- pityrogramma terrestrial tropical ferns having fronds with powdery yellowish or white undersides; sometimes placed in family Polypodiaceae or Adiantaceae
- family adiantaceae used in some classification systems for some genera of the family Polypodiaceae (or Pteridaceae)
- genus phyllitis a genus of ferns belonging to the family Polypodiaceae (in some classification systems included in genus Asplenium)
- dennstaedtia chiefly terrestrial ferns; in some classification systems placed in family Polypodiaceae
- genus cheilanthes small evergreen ferns: lipferns; in some classifications placed in family Polypodiaceae or Adiantaceae
- athyriaceae alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
- genus blechnum in some classification systems placed in family Polypodiaceae; terrestrial ferns of cosmopolitan distribution mainly in southern hemisphere: hard ferns
- woodwardia in some classification systems placed in family Polypodiaceae: chain ferns
- genus scolopendrium a genus of ferns belonging to the family Polypodiaceae (in some classification systems included in genus Asplenium)