Heterothrichopsis Iyengar & Kanthamma, 1941 genus doubtful

Stichococcus genus doubtful

Cylindrocapsa genus doubtful

Interfilum R.Chodat, 1922 genus accepted

Rhexinema L.Geitler, 1943 genus synonym

Ignatius H.C.Bold & F.J.MacEntee, 1974 genus doubtful

Pseudendocloniopsis Vischer, 1933 genus doubtful

Chlorothrix Y.Berger-Perrot, 1982 genus accepted

Acrosiphonia J.Agardh, 1846 genus accepted

Anadema J.Agardh, 1846 genus synonym

Hormidiopsis Heering, 1914 genus accepted

Gloeotilopsis Iyengar & Philipose, 1956 genus accepted

Chlorocystis L.Reinhard, 1885 genus accepted

Ulotrichopsis L.Wichmann, 1937 genus doubtful

Fottea F.Hindák, 1968 genus accepted

Binuclearia Wittrock, 1886 genus accepted

Psephotaxus W.West & G.S.West, 1897 genus doubtful

Pseudoschizomeris T.Deason & H.Bold, 1960 genus doubtful

Hormidiospora Vinatzer, 1975 genus accepted

Chlorhormidium B.Fott, 1960 genus accepted

Raphidonemopsis T.Deason, 1969 genus doubtful

Pseudoneochloris Watanabe, Himizu, Lewis, Floyd & Fuerst, 2000 genus accepted

Coccothrix P.A.Broady & G.M.Lokhorst, 2000 genus doubtful

Halochlorococcum Kormann & Sahling genus synonym

Capsosiphon genus doubtful

Didymonema Y.Wei & H.Hu, 1979 genus synonym

Ulotrichella Y.Berger-Perrot, 1981 genus synonym

Dendronema Schmidle, 1897 genus doubtful

Personiella F.E.Fritsch & M.F.Rich genus synonym

Radiofilum genus doubtful

Geminellopsis A.A.Korsikov, 1939 genus doubtful

Hormotrichopsis genus doubtful

Psephonema H.Skuja, 1937 genus doubtful

Microsporopsis W.Vischer, 1940 genus doubtful

Pearsoniella Fritsch & Rich, 1924 genus doubtful

Ulothrichopsis Iyengar & Kanthamma, 1940 genus synonym

Didymothrix Y.X.Wei & H.J.Hu, 1991 genus doubtful

Hediniella J.N.F.Wille, 1922 genus doubtful

Bachmanniella R.Chodat, 1933 genus doubtful

Palaeogeminella T.R.Fairchild & J.W.Schopf, 1973 genus doubtful

Rindifilum Malavasi, Klimešová, Lukešová & Škaloud, 2022 genus accepted

Pseudothrix L.A.Hanic & S.C.Lindstrom, 2008 genus accepted

Pseudulothrix Pascher, 1907 genus doubtful

Losanaea V.B.A.Trevisan, 1848 genus doubtful

Ulothrix Kützing, 1833 genus accepted

Ingoldia R.H.Petersen genus heterotypic synonym

Gloeotila genus doubtful

Ingenhouzella Gaillon, 1833 genus doubtful

Geminella genus doubtful

Spongomorpha Kützing, 1843 genus accepted

Urospora J.E.Areschoug, 1866 genus accepted

Hormidium Vinatzer genus synonym

Halochlorococcum P.J.L.Dangeard, 1965 genus accepted

Gyoerffyella E.Kol, 1928 genus accepted

Acroliphonia J.G.Agardh, 1846 genus synonym

Codiolum A.Braun, 1855 genus accepted