plants Haeckel (1866) - plants
   Division Charophyta Migula (1889) - charophyte algae and embryophytes see charophytes
     Subdivision [Streptophytina] see [unranked] Streptophytina Lewis & McCourt (2004)
       Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883)
         Vascular Plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
           [Ferns]
             Subclass Polypodiidae Cronquist, Takht. & Zimmerm. (1966)
               Order Hymenophyllales Link (1833) [monotypic]
                 Family Hymenophyllaceae Mart. (1835) - filmy ferns
                   1 Genus Abrodictyum C.Presl (1843)
                   2 Genus Callistopteris Copel.
                   3 Genus Cephalomanes C.Presl
                   4 Genus Crepidomanes (C.Presl) C.Presl
                   5 Genus Didymoglossum Desv.
                   6 Genus Hymenophyllum Sm. (1793)
                   7 Genus Polyphlebium Copel.
                   8 Genus Trichomanes L. (1753)
                   9 Genus Vandenboschia Copel.