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
                             Infrakingdom Streptophyta Caval.-Sm. (1993)
                               [crown] Clade Phragmoplastophyta Lecointre & Le Guyader 2006 [Hall, McCourt, Delwiche, Mishler & Karol 2020]
                                 Phylum Charophytaᵀ Migula (1889) [monotypic]
                                   Order Zygnematales [paraphyletic] - filamentous conjugates and saccoderm desmids
                                     Family Zygnemataceaeᵀ (Meneghini) Kützing (1843) [polyphyletic]
                                       Genus Zygnemaᵀ C.Agardh (1817), nom. cons.
                                         Zygnema carinatum
                                         Zygnema chalybeospermum
                                         Zygnema conspicuum
                                         Zygnema cyanosporum
                                         Zygnema decussatum
                                         Zygnema insigne Kützing
                                         Zygnema leospermum
                                         Zygnema micropunctatum
                                         Zygnema sterile
                                         Zygnema synadelphum
                                         1 Zygnema cruciatumᵀ (Vaucher) C.Agardh
                                         2 Zygnema pectinatum (Vaucher) C.Agardh
                                         3 Zygnema stellinum (O.F.Müll.) C.Agardh