Class Cyanoprokaryota Komárek & Golubić 1990 nom. nud. - cyanoprokaryotes
   Subclass Oscillatoriophycidae Hoffmann, Komárek & Kaštovský (2005), nom. inval.
     Order Oscillatoriales Schaffner (1922) see Order Oscillatoriales Schaffner 1922
       Family Phormidiaceae Anagn. & Komárek (1988) see Family Oscillatoriaceae Engl. (1898), nom. cons.
         01 Genus Arthrospira E. Stizenberger ex Gomont (1892) see Genus Arthrospira Stizenberger ex Gomont 1892
         02 Form genus Dasygloea Thwaites ex Gomont (1892) see Genus Dasygloea Thwaites ex Gomont 1892
         03 Form genus Haliarachne Lemmermann (1899) see Genus Trichodesmium Ehrenberg ex Gomont 1892 nom. cons.
         04 Form genus Hydrocoleum Kütz. ex Gomont (1892) see Genus Hydrocoleum Kützing ex Gomont 1892
         05 Genus Katagnymene Lemmermann (1899) see Genus Katagnymene Lemmermann 1899
         06 Form genus Leibleinia (Gomont) L. Hoffmann (1985) see Genus Leibleinia (Gomont 1892) Hoffmann 1985
         07 Form genus Lyngbyopsis N.L.Gardner (1927) see Genus Lyngbyopsis Gardner 1927
         08 Genus Microcoleus J.B.H.J. Desmazières ex Gomont (1892) see Genus Microcoleus Desmazières ex Gomont 1892
         09 Genus Phormidium Kütz. ex Gomont (1892) see Genus Phormidium Kützing ex Gomont 1892
         10 Genus Planktothrix Anagn. & Komárek (1988) see Genus Planktothrix Anagnostidis and Komárek 1988
         11 Genus Planktothricoides Suda & M.M. Watan. (2002) see Genus Planktothricoides Suda and Watanabe 2002
         12 Form genus Porphyrosiphon Kütz. ex Gomont (1892) see Genus Porphyrosiphon Kützing ex Gomont 1892
         13 Form genus Pseudophormidium (A. Forti) Anagn. & Komárek (1988) see Genus Pseudophormidium (Forti 1907) Anagnostidis and Komárek 1988
         14 Form genus Sirocoleum Kütz. ex Gomont (1892) see Genus Sirocoleum Kützing ex Gomont 1892
         15 Genus Symploca Kütz. ex Gomont (1892) see Genus Symploca Kützing ex Gomont 1892
         16 Form genus Symplocastrum (Gomont) O. Kirchner (1898) see Genus Symplocastrum (Gomont 1892) Kirchner 1898
         17 Genus Trichodesmium Ehrenb. ex Gomont (1892), nom. cons. see Genus Trichodesmium Ehrenberg ex Gomont 1892 nom. cons.
         18 Genus Tychonema Anagn. & Komárek (1988) see Genus Tychonema Anagnostidis and Komárek 1988