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 Nostocaceae Eichler (1886) see Family Nostocaceae Eichler 1886
         01 Genus Compactonostoc Fangfang Cai & Ren H.Li (2019) see Genus Compactonostoc Cai and Li 2019
         02 Genus Desmonostoc P.Hrouzek & S.Ventura (2013) see Genus Desmonostoc Hrouzek and Ventura 2013
         03 Genus Dendronalium D.O. Alvarenga, A.P.D. Andreote, L.H.Z. Branco, E. Delbaje, R.B. Cruz, A.M. Varani & M.F. Fiore (2021) see Genus Dendronalium Alvarenga et al. 2021
         04 ?Genus Heterocyanococcus H. Kufferath (1929) see Genus Heterocyanococcus Kufferath 1929
         05 Genus Komarekiella G.S. Hentschke, J.R.Johans. & C.L. Sant'Anna (2017) see Genus Komarekiella Hentschke et al. 2017
         06 Genus Mojavia Řeháková & Johansen (2007) see Genus Mojavia Řeháková and Johansen 2007
         07 Genus Nostoc Vaucher ex Bornet & Flahault (1886) see Genus Nostoc Vaucher ex Bornet and Flahault 1886
         08 Genus Parakomarekiella F.Soares, V.Ramos & A.Portugal (2020) see Genus Parakomarekiella Soares et al. 2020
         09 Genus Roholtiella Bohunická, Pietrasiak & J.R.Johans. (2015) see Genus Roholtiella Bohunická et al. 2015
         10 Genus Violetonostoc Fangfang Cai & Ren H.Li (2020) see Genus Violetonostoc Cai and Li 2020