procaryotes
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum Cyanobacteria "Stanier (1974)" [monotypic] see Phylum Cyanobacteriota Oren et al. 2022
       Class "Cyanobacteria" "Stanier (1974)", nom. inval. [monotypic] - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
         Subsection IV
           Subgroup I see Family I
             1 Form genus Anabaena Bory ex Bornet & Flahault (1886), nom. cons. see Genus Anabaena Bory ex Bornet and Flahault 1886 nom. cons.
             2 Form genus Anabaenopsis V.V.Mill. (1923) see Genus Anabaenopsis Miller 1923
             3 Form genus Aphanizomenon C. Morren ex Bornet & Flahault (1886) see Genus Aphanizomenon Morren ex Bornet and Flahault 1886
             4 Form genus Cyanospira G. Florenz., Sili, Pelosi & Vincenzini (1985), nom. nud. see Genus Cyanospira G. Florenz., Sili, Pelosi & Vincenzini (2015), nom. illeg.
             5 Form genus Cylindrospermopsis G. Seenayya & N. Subba Raju (1972) see Genus Raphidiopsis Fritsch and Rich 1929
             6 Form genus Cylindrospermum Kütz. ex Bornet & Flahault (1886) see Genus Cylindrospermum Kützing ex Bornet and Flahault 1886
             7 Form genus Nodularia Mert. ex Bornet & Flahault (1886), nom. cons. see Genus Nodularia Mertens ex Bornet and Flahault 1886 nom. cons.
             8 Form genus Nostoc Vaucher ex Bornet & Flahault (1886) see Genus Nostoc Vaucher ex Bornet and Flahault 1886
             9 Form genus Scytonema C.Agardh ex Bornet & Flahault (1886) see Genus Scytonema Agardh ex Bornet and Flahault 1886