[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
     01 Family Scytonemataceae A.B.Frank (1886) see Family Scytonemataceae corrig. Frank 1886
     02 Family Symphyonemataceae Hoffmann, Komárek & Kaštovský (2005), nom. inval. see Family Scytonemataceae A.B.Frank (1886)
     03 Family Rivulariaceae Frank (1886) see Family Rivulariaceae Frank 1886
     04 Family Tolypothrichaceae Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014), orth. inval. see Family Tolypotrichaceae Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014)
     05 Family Godleyaceae Hauer, Bohunická, J.R.Johans., Mareš & Berrendero-Gomez (2014) see Family Godleyaceae Hauer et al. 2014
     06 Family Chlorogloeopsidaceae Mitra & Pandey (1967) [monotypic] see Family Chlorogloeopsidaceae Mitra and Pandey 1967
     07 Family Capsosiraceae L. Geitler (1925) see Family Capsosiraceae Geitler 1925
     08 Family Stigonemataceae Borzì (1892), nom. cons. see Family Stigonemataceae corrig. (Agardh ex Bornet and Flahault 1886) Borzì 1892 nom. cons.
     09 Family Hapalosiphonaceae Elenkin (1917), nom. cons. see Family Hapalosiphonaceae Elenkin 1917
     10 Family Fortieaceae Komárek, Kaštovský, Mareš & Johansen (2014), nom. nud. see Family Leptobasaceae Elenkin (1917), nom. illeg.
     11 Family Gloeotrichiaceae Komárek, J. Kaštovský, J. Mareš & J.R.Johans. (2014) see Family Aphanizomenaceae corrig. Elenkin 1938
     12 Family Aphanizomenonaceae Elenkin (1938), orth. inval. see Family Aphanizomenaceae corrig. Elenkin 1938
     13 Family Nostocaceae Eichler (1886) see Family Nostocaceae Eichler 1886