[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 Hassallia M.J. Berkeley ex Bornet & Flahault (1886), nom. illeg. see Genus Tolypothrix Kützing ex Bornet and Flahault 1886