[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
     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)
       Genus Streptostemon C.L. Sant'Anna, T.M.P. Azevedo, J. Kaštovský & Komárek (2010) see Genus Streptostemon Sant'Anna et al. 2010