[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Prokaryota see Domain Prokaryota
     Class Cyanophyceae Hauck (1885) see Class Chroococcophyceae Hollerbach et al. 1953
       Order Hormogonales Atkinson 1905 see Order Nostocales Borzì (1914)
         Family Oscillatoriaceae Engl. (1898), nom. cons. see Family Oscillatoriaceae Engler 1898 nom. cons.
           1 Genus Oscillatoria Vaucher ex Gomont (1892) see Genus Oscillatoria Vaucher ex Gomont 1892
           2 Genus Spirulina P.J.F. Turpin ex Gomont (1892) see Genus Spirulina Turpin ex Gomont 1892