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)

Polypodiaceae is a family of polypod ferns, which includes approximately 50 genera divided into several tribes containing around 1,000 species. Nearly all are epiphytes, but some are terrestrial.