[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
     Family Fortieaceae Komárek, Kaštovský, Mareš & Johansen (2014), nom. nud. see Family Leptobasaceae Elenkin (1917), nom. illeg.
       Genus Coleospermum Kirchner ex Frank (1886) see Genus Microchaete Thuret ex Bornet and Flahault 1886 nom. cons.