Domain Bacteria Woese et al. 1990
   Phylum Cyanobacteria (ex Stanier 1974) Cavalier-Smith 2002 - cyanobacteria
     Class "Cyanobacteria" Cavalier-Smith, 2002
       Subsection III see Family Family 3.1 nom. inval.
         Form genus Arthrospira E. Stizenberger ex Gomont 1892-1893[1893] [ICBN]
         Form genus Borzia F.J. Cohn ex M. Gomont 1892-1893[1893] [ICBN]
         Form genus Crinalium Crow 1927 nom. inval. see Genus Crinalium W.B. Crow 1927 [ICBN]
         Form genus Geitlerinema (Anagnostidis & Komárek) K. Anagnostidis 1989 [ICBN]
         Form genus Leptolyngbya Anagnostidis & Komárek 1988 [ICBN]
         Form genus Limnothrix Meffert 1987 see Genus Limnothrix M.-E. Meffert 1987 [ICBN]
         Form genus Lyngbya C.Agardh ex Gomont (1892), nom. cons.
         Form genus Microcoleus J.B.H.J. Desmazières ex M. Gomont 1892 [ICBN]
         Form genus Oscillatoria Vaucher ex Gomont (1892)
         Form genus Planktothrix Anagnostidis and Komárek 1988 nom. inval. see Genus Planktothrix K. Anagnostidis & J. Komárek 1988 [ICBN]
         Form genus Prochlorothrix Burger-Wiersma et al. 1989 see Genus Prochlorothrix T. Burger-Wiersma et al. 1989 [ICBN]
         Form genus Pseudanabaena R. Lauterborn 1915 [ICBN]
         Form genus Spirulina P.J.F. Turpin ex M. Gomont (1892)
         Form genus Starria N.J. Lang 1977 [ICBN]
         Form genus Symploca F.T. Kützing ex Gomont 1892-1893[1893] [ICBN]
         Form genus Trichodesmium [ICNB] see Genus Trichodesmium Ehrenb. ex Gomont (1893)
         Form genus Tychonema Anagnostidis & Komárek 1988 [ICBN]