vascular plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
   euphyllophytes see Clade Euphyllophyta Lecointre & Le Guyader 2006 [Cantino & Donoghue 2020]
     monilophytes - ferns see Clade Monilophyta Cantino & Donoghue 2007 [Doyle, Cantino & Donoghue 2020]
       Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns
         core leptosporangiates
           Order Polypodiales Link (1833) - cathetogyrates
             eupolypods
               eupolypods II see Suborder Aspleniineae H.Schneid. & C.J.Rothf. (2016)
                 Family Blechnaceae Newman (1844) - blechnoids
                   1 Genus Blechnum L. (1753)
                   2 Genus Brainea J.Sm. (1856)
                   3 Genus Doodia R.Br. (1810)
                   4 Genus Pteridoblechnum Hennipman (1966) see Genus Blechnum L. (1753)
                   5 Genus Sadleria Kaulf. (1824)
                   6 Genus Salpichlaena J.Sm. (1841)
                   7 Genus Steenisioblechnum Hennipman see Genus Blechnum L. (1753)
                   8 Genus Stenochlaena J.Sm. (1841)
                   9 Genus Woodwardia Sm. (1793)