[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
     Family Rivulariaceae Frank (1886) see Family Rivulariaceae Frank 1886
       Genus Isactis G. Thuret ex Bornet & Flahault (1886) see Genus Isactis Thuret ex Bornet and Flahault 1886