Berestovia O.I. Berchenko in Yu.V. Teslenko, 1982 genus accepted

Boueina F. Toula, 1884 genus accepted

Capsulococcus A.W. Bennett, 1888 genus provisionally accepted

Chloremys Pascher, 1940 genus accepted

Chlorolepus H. Bompard, 1867 genus provisionally accepted

Chloronomala Mitra, 1950 genus accepted

Chlorotylites M.A. Howe, 1932 genus accepted

Cribrokamaena P.L. Brenckle, 1985 genus accepted

Kinwowia W.L. Fry, 1983 genus accepted

Lacrymorphus G.F. Elliott, 1958 genus accepted

Maclaella V.D. Saltovskaja, 1974 genus accepted

Oedogoniales order accepted

Szeellaceae family accepted

Cadmus J.B.G. Bory de St.-Vincent, 1822 genus accepted

Crassikamaena P.L. Brenckle, 1985 genus accepted

Neosphaerochloris F. Hindák, 1990 genus accepted

Lomentunella T.N. Hermann, 1981 genus accepted

Noremia M. Kedves, 1962 genus accepted

Pseudoissinella B.L. Mamet & B. Rudloff, 1972 genus accepted

Scotlandella O. Dragastan in D.F. Toomey & M.H. Nitecki, 1985 genus accepted

Tethysicodium O. Dragastan in D.F. Toomey & M.H. Nitecki, 1985 genus accepted

Tetrasporella B. Gaillon, 1833 genus accepted

Yukonella B.L. Mamet & B. Rudloff, 1972 genus accepted

Yentaiia A.G. Vologdin, 1958 genus accepted

Oocystopsis H. Heynig, 1991 genus accepted

Ovillaria R. Nielsen, 1988 genus accepted

Palaeoporella E. Stolley, 1893 genus accepted

Paleoclosterium R.A. Baschnagel, 1966 genus accepted

Paleodidymoprium R.A. Baschnagel, 1966 genus accepted

Paleooedogonium R.A. Baschnagel, 1966 genus accepted

Tetrasporales order accepted

Frustulata V.D. Saltovskaja in M.R. Dzhalolov, 1984 genus accepted

Physidrum Rafinesque, 1810 genus provisionally accepted

Piaea R. Florin, 1929 genus accepted

Hortobagyiella L. Hajdu, 1975 genus accepted

Hydrurites P.F. Reinsch in G. Neumayer, 1890 genus provisionally accepted

Ophiothrix Corda, 1835 genus provisionally accepted

Achoma P.M. Novis & G. Visnovsky, 2012 genus accepted

Variochloris P.M. Novis & G. Visnovsky, 2012 genus accepted

Receptaculitales James, 1885 order accepted

Wareniococcus E.A. Molinari-Novoa & M.D. Guiry, 2021 genus accepted

Pseudoprostratum A.K. Mahato & P. Mahato, 1993 genus accepted

Rundinella K.A. Lubomirova in K.A. Lubomirova & L.A. Rundina, 1993 genus accepted

Sangirellum A.K. Mahato & P. Mahato, 1994 genus accepted

Sarfatiella M.A. Conrad & B. Peybernès, 1974 genus accepted

Selenodictyon G. Uherkovich & A. Schmidt ex A. Comas & J. Komárek in A. Comas, 1992 genus accepted

Seletonella K.B. Korde, 1950 genus accepted

Uvella Bory de Saint-Vincent, 1824 genus accepted

Sinocapsa A.G. Vologdin, 1958 genus accepted

Sorodiscus G.J. Allman, 1847 genus accepted

Sphaerodesmus C. Nägeli ex A. Braun, 1855 genus accepted

Jenufa Y. Nemcová, M. Eliáš, P. Škaloud & J. Neustupa in Y. Nemcová et al., 2011 genus accepted

Kalodictyon Wolle, 1877 genus provisionally accepted

Sphaeropleales order accepted

Dictyococcus Gerneck, 1907 genus accepted

Didymogenopsis T. Hortobágyi, 1980 genus accepted

Chaetopeltidales order accepted

Chaetophorales order accepted

Chlamydomonadales F.E. Fritsch order accepted