[Class] Cyanobacteria "Stanier (1974)", nom. inval. - cyanoprokaryotes see Class Cyanophyceae Hauck (1885)
   Order Pleurocapsales Geitler (1925) see Order Chroococcales Ardissone (1887)
     Family Hyellaceae Borzì (1914) see Family Hydrococcaceae Kützing (1843)
       Genus Hyella Bornet & Flahault (1888) see Genus Hyella Bornet and Flahault 1888