Pflanzenreich Haeckel (1866) - plants
   Division Euthallophyta
     Subdivision Euphyceae
       1 Class Peridiniales
       2 Class Bacillariales Hendey (1937)
       3 Class Conjugatae
       4 Class Chlorophyceae Wille (1884) - chlorophytes
       5 Class Charales Lindl. (1836) see Order Charales Lindl. (1836)
       6 Class Phaeophyceae Hansgirg (1886) - brown algae
       7 Class Dictyotales
       8 Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901)