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 stat. inval.
       Division Cyanophycota see Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 stat. inval.
         Class Cyanophyceae Hauck (1885) see Class Chroococcophyceae Hollerbach et al. 1953
           Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
             Family Nostocaceae Eichler (1886) see Family Nostocaceae Eichler 1886
               1 Genus Anabaena Bory ex Bornet & Flahault (1886), nom. cons. see Genus Anabaena Bory ex Bornet and Flahault 1886 nom. cons.
               2 Genus Aphanizomenon C. Morren ex Bornet & Flahault (1886) see Genus Aphanizomenon Morren ex Bornet and Flahault 1886
               3 Genus Nostoc Vaucher ex Bornet & Flahault (1886) see Genus Nostoc Vaucher ex Bornet and Flahault 1886
               4 Genus Richelia J. Schmidt (1901) see Genus Richelia Schmidt 1901