Procaryotic Genera Domain "Bacteria" Woese et al. 1990 Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 [monotypic] - cyanobacteria Class "Cyanobacteria" Cavalier-Smith, 2002 Subsection IV Family I see Family Family 4.1 nom. inval. 1 Form genus Anabaena Bory 1822 ex Bornet & Flahault 1886 nom. cons. [ICBN] 2 Form genus Anabaenopsis (Woloszynska) V.V. Mill. 1923 [ICBN] 3 Form genus Aphanizomenon C. Morren ex É. Bornet & C. Flahault 1886-1888[1888] [ICBN] 4 Form genus Cyanospira Florenzano et al. 1985 nom. inval. [ICBN] 5 Form genus Cylindrospermopsis G. Seenayya & N. Subba Raju in T.V. Desikachary 1972 [ICBN] 6 Form genus Cylindrospermum F.T. Kützing 1843 ex É. Bornet & C. Flahault 1886-1888[1888] [ICBN] 7 Form genus Nodularia Mertens ex Bornet & Flahault (1888), nom. cons. 8 Form genus Nostoc Vaucher ex Bornet & Flahault (1888) 9 Form genus Scytonema C.Agardh ex Bornet & Flahault (1887)