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 Cycadophytanae Doweld (2001)
           Phylum Cycadophyta Bessey (1907) see Subclass Cycadidae Pax (1894)
             Class Cycadopsida Brongn. (1843)
               Subclass Zamiidae Doweld (2001)
                 Order Zamiales Burnett (1835)
                   Family Zamiaceae Horan. (1834)
                     Genus Zamia L. (1763), nom. cons.