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 Nostocales Borzì (1914)] see Order Nostocales corrig. Borzì 1914
                     [Family "Aphanizomenonaceae" Elenkin (1938), orth. inval.] see Family Aphanizomenaceae corrig. Elenkin 1938
                       [Genus Anabaena Bory ex Bornet & Flahault (1886), nom. cons.] see Genus Anabaena Bory ex Bornet and Flahault 1886 nom. cons.
                         [Anabaena hallensis (Janczewski 1874) ex Bornet & Flahault (1888)] see Trichormus hallensis ((Janczewski 1874) ex Bornet and Flahault 1888) J. Komárek and K. Anagnostidis 1989