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 discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Plantae Haeckel (1866) - plants
                           Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants
                             Phylum Chlorophyta Pascher (1914) [coordinate rank] - green algae
                               "core chlorophytes"
                                 Class Chlorophyceae Wille (1884) - chlorophytes
                                   Order Sphaeropleales Luerssen (1877)
                                     Family Hydrodictyaceae Dumort.
                                       Genus Pediastrum F.J.F. Meyen (1829)
                                         Pediastrum tetras (Ehrenberg, 1838) Ralfs ex Ralfs
                                           1 Pediastrum tetras var. apiculatum Playfair
                                           2 Pediastrum tetras var. cuspidatum Bailey
                                           3 Pediastrum tetras var. fluviatile Playfair
                                           4 Pediastrum tetras var. longicornutum (Gutwinski) Playfair
                                           5 Pediastrum tetras var. tetraodon (A.K.J. Corda, 1839) A. Hansgirg (1886)