Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Pteridobiotina Britton & A. Br. (1896)
     Superdivision Pteridophytanae Doweld (2001) [monotypic] see Superphylum Pteridophytanae Doweld (2001)
       Division Monilophyta Cantino & Donoghue
         Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns
           Order Polypodiales Link (1833) - cathetogyrates
             Family Blechnaceae Newman (1844) - blechnoids
               1 Genus Blechnum L. (1753)
               2 Genus Brainea J.Sm. (1856)
               3 Genus Pteridoblechnum Hennipman (1966) see Genus Blechnum L. (1753)
               4 Genus Sadleria Kaulf. (1824)
               5 Genus Salpichlaena J.Sm. (1841)
               6 Genus Steenisioblechnum Hennipman see Genus Blechnum L. (1753)
               7 Genus Stenochlaena J.Sm. (1841)
               8 Genus Woodwardia Sm. (1793)