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 Woodsiaceae Herter (1949) - lady ferns
               1 Genus Cheilanthopsis Hieron. (1920) see Genus Woodsia R.Br. (1810)
               2 Genus Hymenocystis C.A.Mey. (1831) see Genus Woodsia R.Br. (1810)
               3 Genus Protowoodsia Ching (1945) see Genus Woodsia R.Br. (1810)
               4 Genus Woodsia R.Br. (1810)