plant order - the order of plants

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

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

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

class Filicinae, class Filicopsida, Filicinae, Filicopsida - ferns

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)

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

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

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