Kingdom Chlorobiota C.Jeffrey ex Doweld (2001) - plants see Subkingdom Viridiplantae Caval.-Sm. (1981) Subkingdom Pteridobiotina Britton & A. Br. (1896) Superdivision Cycadophytanae Doweld (2001) see Superphylum Cycadophytanae Doweld (2001) Division Cycadophyta Bessey (1907) Class Cycadopsida Brongn. (1843) Subclass Zamiidae Doweld (2001) Order Zamiales Burnett (1835) [monotypic] Family Zamiaceae Horan. (1834) Genus Encephalartos Lehm. (1834)