[plants] Haeckel (1866) - plants
   vascular plants see Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998)
     euphyllophytes see Clade Euphyllophyta Lecointre & Le Guyader 2006 [Cantino & Donoghue 2020]
       "Moniliformopses" Kenrick & P.R.Crane (1997), nom. inval. - ferns see Infraphylum Moniliformopses Kenrick & P.R.Crane (1997), nom. inval.
         Class Polypodiopsida Cronquist, Takht. & Zimmerm. (1966) - ferns
           1 Order Osmundales Bercht. & J.Presl (1820)
           2 Order Hymenophyllales Link (1833)
           3 Order Gleicheniales Link (1833)
           4 Order Schizaeales Schimp. (1869)
           5 Order Salviniales Link (1833) - water ferns
           6 Order Cyatheales A.B.Frank (1877) - tree ferns
           7 Order Polypodiales Link (1833) - cathetogyrates