living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Prokaryotae see Superkingdom Prokarya
     Kingdom Monera Haeckel 1866 see Domain Bacteria Woese et al. 1990
       Division Cyanophycota see Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002
         Class Cyanophyceae Schaffner (1909) see Class Cyanobacteria Cavalier-Smith, 2002
           Order Nostocales Borzì (1914)
             Family Nostocaceae Eichler (1886)
               Genus Anabaena Bory 1822 ex Bornet & Flahault 1886 nom. cons. [ICBN]
                 Anabaena azollae Strasburger