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 Capsosiraceae L. Geitler (1925), incertae sedis see Family Capsosiraceae Geitler 1925
         1 ?Genus Capsosira Kütz. ex Bornet & Flahault (1886) see Genus Capsosira Kützing ex Bornet and Flahault 1886
         2 ?Genus Desmosiphon A. Borzì (1907) see Genus Desmosiphon Borzì 1907
         3 ?Genus Nematoplaca Geitler (1933) see Genus Nematoplaca Geitler 1933
         4 ?Genus Stauromatonema Frémy (1930) see Genus Stauromatonema Frémy 1930