Mawsonella F. Chapman, 1927 genus accepted

Jansaella B.L. Mamet & A. Roux, 1975 genus provisionally accepted

Nesea Lamouroux genus accepted

Piriurella I.C. Cookson & A. Eisenack, 1979 genus accepted

Yuknessia C.D. Walcott, 1919 genus accepted

Gambangia I.C. Cookson & A. Eisenack, 1979 genus accepted

Merrettia S.F. Gray, 1821 genus accepted

Chlorophytina subphylum accepted

Phaeostrepte Skuja ex T. Willén, 1992 genus accepted

Heterocystinella I.C. Cookson & A. Eisenack, 1979 genus accepted

Hysginum M. Perty, 1852 genus accepted

Athroocystis W. West & G. West, 1897 genus accepted

Palambages O. Wetzel, 1961 genus accepted

Protosphaeria P.J.F. Turpin, 1828 genus accepted

Prasinophytina subphylum accepted

Pseudomurilella N. Hanagata, 1998 genus accepted

Schodackia R. Ruedemann, 1942 genus accepted

Sphaerodesmus Corda genus accepted

Sphaerosiphon Schussnig, 1915 genus accepted

Springerella O. Dragastan & D.K. Richter, 2001 genus accepted

Isogonium (Kützing) de Bary genus accepted

Johnson Eiseman & Earle genus accepted