Phylum Cyanobacteria Garcia-Pichel et al. (2020) see Phylum Cyanobacteriota Oren et al. 2022
   Class Cyanophyceae Hauck (1885) see Class Chroococcophyceae Hollerbach et al. 1953
     Order Nostocales Borzì (1914) see Order Nostocales corrig. Borzì 1914
       Family Rivulariaceae Frank (1886) see Family Rivulariaceae Frank 1886
         01 ?Genus Calothrix C.Agardh ex Bornet & Flahault (1886) see Genus Calothrix Agardh ex Bornet and Flahault 1886
         02 ?Genus Dichothrix Zanardini ex Bornet & Flahault (1886) see Genus Dichothrix Zanardini ex Bornet and Flahault 1886
         03 Genus Dulcicalothrix Saraf, Suradkar, Dawda, Gaysina, Gabidullin, Kumat, Behere, Kotulkar, Batule & Singh (2019) see Genus Dulcicalothrix Saraf et al. 2019
         04 ?Genus Gardnerula G. De Toni (1936) see Genus Gardnerula De Toni 1936
         05 ?Genus Isactis G. Thuret ex Bornet & Flahault (1886) see Genus Isactis Thuret ex Bornet and Flahault 1886
         06 Genus Kyrtuthrix Ercegović (1929) see Genus Kyrtuthrix Ercegović 1929
         07 Genus Macrochaete Berrendero Gómez, Johansen & Kastovsky (2016) see Genus Macrochaete Berrendero Gómez et al. 2016
         08 Genus Mastigocoleus G. Lagerheim ex Bornet & Flahault (1886) see Genus Mastigocoleus Lagerheim ex Bornet and Flahault 1886
         09 ?Genus Microchaete G. Thuret ex Bornet & Flahault (1886), nom. cons. see Genus Microchaete Thuret ex Bornet and Flahault 1886 nom. cons.
         10 Genus Nunduva González-Resendiz, León-Tejera & Johansen (2018) see Genus Nunduva González-Resendiz et al. 2018
         11 Genus Phyllonema D.O. Alvarenga, J. Rigonato, L.H.Z. Branco, I.S. Melo & M.F. Fiore (2016) see Genus Phyllonema Alvarenga et al. 2016
         12 Genus Richelia J. Schmidt (1901) see Genus Richelia Schmidt 1901
         13 Genus Rivularia C.Agardh ex Bornet & Flahault (1886), nom. cons. see Genus Rivularia Agardh ex Bornet and Flahault 1886 nom. cons.
         14 ?Genus Sacconema A. Borzì ex Bornet & Flahault (1886) see Genus Sacconema Borzì ex Bornet and Flahault 1886