Natura - nature actualia - actual entities Mundus Plinius - physical world naturalia - natural bodies [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Clade "neomura" Cavalier-Smith 1987 Domain Eukaryota Chatton, 1925 - eukaryotes Clade neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes Clade neozoa Cavalier-Smith 1993 Superkingdom Corticata Lankester, 1878 Kingdom Plantae Haeckel (1866) - plants Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants Phylum Chlorophyta Pascher (1914) [coordinate rank] - green algae Genus Smithsoniella J.R. Sears & S.H. Brawley