Kingdom Chlorobionta Jeffrey, 1982 see [unranked] Chloroplastida S.M. Adl et al., 2005
   Division Chlorophyta Reichenbach (1834) - green algae sensu stricto see Phylum Chlorophyta Pascher (1914)
     Subdivision Chlorophytina see Phylum Chlorophyta Pascher (1914)
       Class Chlorophyceae Wille (1884) - chlorophytes
         Cylindrocapsa clade
           1 Genus Cylindrocapsa P.F. Reinsch (1867)
           2 Genus Trochiscia F.T. Kützing (1845)
           3 Genus Treubaria C.Bernard (1908)