Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981)
   Subkingdom Lycopodiobiotina Doweld (2001)
     Division Lycopodiophyta D.H.Scott (1900) see Phylum Lycopodiophyta D.H.Scott (1900)
       Class Isoëtopsida Rolle (1884)
         a Order Selaginellales Prantl (1874)
         b Order †Lepidodendrales Haeckel (1868)
         c Order †Pleuromeiales F.A. Barkley (1939) [monotypic]
         d Order Isoëtales Prantl (1874)