Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
       Subkingdom Pteridobiotina Britton & A. Br. (1896)
         Superphylum Pteridophytanae Doweld (2001)
           Phylum Pteridophyta Schimp. (1879) see Phylum Filicinophyta
             Class Pteridopsida Ritgen (1828) see Order Polypodiales Link (1833)
               Subclass Denstaedtiidae Doweld (2001), orth. inval. [monotypic]
                 Order Denstaedtiales Doweld (2001), orth. inval.
                   1 Family Lindsaeaceae C.Presl ex M.R.Schomb. (1848) - lindsaeoids
                   2 Family Pteridiaceae Ching (1975) see Family Dennstaedtiaceae Lotsy (1909)
                   3 Family Denstaedtiaceae orth. inval. see Family Dennstaedtiaceae Lotsy (1909)
                   4 Family Monachosoraceae Ching (1978) see Family Dennstaedtiaceae Lotsy (1909)
                   5 Family Hypolepidaceae Pic.Serm. (1970) see Family Dennstaedtiaceae Lotsy (1909)