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 Polypodiales Link (1833) - cathetogyrates
                 Family Blechnaceae Newman (1844) - blechnoids
                   Subfamily Blechnoideae Gasper, V. A. O. Dittrich & Salino
                     1 Genus Blechnum L. (1753)
                     2 Genus Brainea J.Sm. (1856)
                     3 Genus Sadleria Kaulf. (1824)
                     4 Genus Salpichlaena J.Sm. (1841)
                     5 Genus Telmatoblechnum L.R. Perrie, D.J. Ohlsen & P.J. Brownsey in L.R. Perrie et al. (2014)
                     6 Genus Woodwardia Sm. (1793)