| Noun | 1. | order Filicales - true (leptosporangiate) ferns 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 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, and Woodwardia Dicksoniaceae, family Dicksoniaceae - tree ferns: genera Dicksonia, Cibotium, Culcita, and Thyrsopteris elegans 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 |