life see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Empire Eukaryota (Chatton, 1925) see Domain Eukaryota Chatton, 1925 Kingdom Plantae Haeckel (1866) - plants Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants Infrakingdom Chlorophyta Caval.-Sm. (1993) [monotypic] - green algae Phylum Chlorophyta Pascher (1914) - green algae Subphylum Phragmophytina T. Cavalier-Sm. (1998) - phragmophytes see Phylum Charophyta Migula (1889) Infraphylum Charophytae (Engl., 1887) Cavalier-Sm. (1998) [monotypic] see Phylum Charophyta Migula (1889) Class Charophyceae Rabenh. (1863) [monotypic] - stoneworts Order Charales Lindl. (1836) - stoneworts