Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Biota
           "neomura"
             Domain Eukaryota Chatton, 1925 - eukaryotes
               "neokaryotes" - mitochondrial eukaryotes
                 "neozoa"
                   Superkingdom Corticata Lankester, 1878
                     Kingdom Plantae Haeckel (1866) - plants
                       Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants
                         Infrakingdom Chlorophyta Caval.-Sm. (1993) [monotypic] - green algae
                           Phylum Chlorophytaᵀ Pascher (1914) - green algae
                             Genus Smithsoniella J.R. Sears & S.H. Brawley
                             1 "prasinophytes"
                             1.6.3.2 "core chlorophytes"