family - (biology) a taxonomic group containing one or more genera; "sharks belong to the fish family"

division Pteridophyta, Pteridophyta - containing all the vascular plants that do not bear seeds: ferns, horsetails, club mosses, and whisk ferns; in some classifications considered a subdivision of Tracheophyta

family Hymenophyllaceae, Hymenophyllaceae - terrestrial (hygrophytic) or epiphytic ferns: filmy ferns

family Osmundaceae, Osmundaceae - large family of ferns widely distributed in temperate and tropical areas

family Schizaeaceae, Schizaeaceae - small family of mainly tropical ferns

family Marsileaceae, Marsileaceae - clover ferns

family Salviniaceae, Salviniaceae - water ferns

Azollaceae, family Azollaceae - used in some classifications for the genus Azolla

family Ophioglossaceae, Ophioglossaceae - a family of succulent ferns of order Ophioglossales; cosmopolitan in distribution

family Gleicheniaceae, Gleicheniaceae - a family of ferns belonging to order Filicales

family Parkeriaceae, Parkeriaceae - coextensive with the genus Ceratopteris; sometimes included in family Polypodiaceae

family Polypodiaceae, Polypodiaceae - 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)

Adiantaceae, family Adiantaceae - used in some classification systems for some genera of the family Polypodiaceae (or Pteridaceae)

family Vittariaceae, Vittariaceae - one of a number of families into which Polypodiaceae has been subdivided in some classification systems: genus Vittaria

Aspleniaceae, family Aspleniaceae - one of a number of families into which Polypodiaceae has been subdivided in some classification systems; includes genera Asplenium; Pleurosorus; Schaffneria

Blechnaceae, family 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; Woodwardia

Cyatheaceae, family Cyatheaceae - tropical tree ferns

Davalliaceae, family Davalliaceae - one of a number of families into which Polypodiaceae has been subdivided in some classification systems

Dennstaedtiaceae, family Dennstaedtiaceae - one of a number of families into which Polypodiaceae has been subdivided in some classification systems

Dicksoniaceae, family Dicksoniaceae - tree ferns: genera Dicksonia; Cibotium; Culcita; Thyrsopteris

Athyriaceae, Dryopteridaceae, family Athyriaceae, family Dryopteridaceae - alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems

family Lomariopsidaceae, Lomariopsidaceae - small family of usually scandent ferns

family Lophosoriaceae, Lophosoriaceae - very small family of tree ferns

family Loxomataceae, Loxomataceae - very small family of New Zealand ferns

family Oleandraceae, Oleandraceae - one of a number of families into which Polypodiaceae has been subdivided in some classification systems

family Pteridaceae, 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

family Marattiaceae, Marattiaceae - constituting the order Marattiales: chiefly tropical eusporangiate ferns with gigantic fronds

family Psilotaceae, Psilotaceae - small family of lower ferns having nearly naked stems and minute scalelike leaves

family Psilophytaceae, Psilophytaceae - Paleozoic plants

family Rhyniaceae, Rhyniaceae - primitive plants of the Paleozoic

Equisetaceae, family Equisetaceae, horsetail family - sole surviving family of the Equisetales: fern allies