Kingdom Protoctista Hogg, 1860
   Subkingdom Phycobionta
     Division Chlorophyta Reichenbach (1834) - green algae sensu stricto see Phylum Chlorophyta Pascher (1914)
       1 Class Chlorophyceae Wille (1884) - chlorophytes
       2 Class Charophyceae Rabenh. (1863) - stoneworts