Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Bacillatiᵀ (Gibbons and Murray 1978) Oren and Göker 2024
               [Phylum Cyanobacteria Garcia-Pichel et al. (2020)] see Phylum Cyanobacteriota Oren et al. 2022
                 [Class Cyanophyceae Hauck (1885)] see Class Chroococcophyceae Hollerbach et al. 1953
                   [Order Chroococcales Ardissone (1887)] see Order Chroococcales corrig. Ardissone 1887
                     [Family Microcystaceae Elenkin (1933), sedis mutabilis] see Family Microcystaceae Elenkin 1933
                       [Genus Synechocystis C. Sauvageau (1893)] see Genus Synechocystis Sauvageau 1893
                         Synechocystis aquatilis Sauvageau 1892
                         Synechocystis consortia Norris
                         Synechocystis endobiotica (A.A. Elenkin and M.M. Hollerbach) A.A. Elenkin and M.M. Hollerbach in A.A. Elenkin 1938
                         Synechocystis endophytica (G.M. Sm. 1920) Joosten (2006)
                         Synechocystis pevalekii Ercegovic 1925
                         Synechocystis salina Wislouch 1924