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)
         1 Superphylum †Psilophytanae Doweld (2001)
         2 Superphylum Pteridophytanae Doweld (2001)
         3 Superphylum Cycadophytanae Doweld (2001)