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]
           [Superkingdom Eukaryota Whittaker & Margulis, 1978] see Domain Eukaryota Chatton, 1925
             [Kingdom "Chlorobiota" Jeffrey (1971), nom. inval.] see Kingdom Chlorobiota C.Jeffrey ex Doweld (2001)
               [Subkingdom Ulvobionta [monotypic]]
                 [Division "Ulvophyta"ᵀ F.E. Round (1984), nom. nud.] see Phylum Ulvophyta Doweld (2001)
                   2.1 [Class Pleurastrophyceae K.R. Mattox & K.D. Stewart (1984)] see Class Trebouxiophyceae T. Friedl (1995)