Domain Eucaryota
   Subdomain Chlorota Doweld (2001)
     Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
       Subkingdom Lycopodiobiotina Doweld (2001)
         Phylum Isoëtophyta Doweld (2001)
           Subphylum Selaginellophytina Doweld (2001) [monotypic]
             1[4] Class Selaginellopsida A.B.Frank (1874) see Class Isoëtopsida Rolle (1884)