Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [[crown] organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] [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)] [Superdivision Pteridophytanae Doweld (2001)] see Superphylum Pteridophytanae Doweld (2001) [Division Monilophyta Cantino & Donoghue] [Class Equisetopsida C.Agardh (1825) - horsetails] see Subclass Equisetidae Warm. (1883) [Order †Gondwanostachyales Doweld (2001)] see Order Equisetales DC. ex Bercht. & J.Presl (1829)