[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 Gardnerula G. De Toni (1936) see Genus Gardnerula De Toni 1936