Pflanzenreich Haeckel (1866) - plants
   Division Euthallophyta
     Subdivision Euphyceae
       1 [Class] Peridiniales
       2 [Class] Bacillariales Hendey (1937) [monotypic]
       3 Class Conjugatae
       4 Class Chlorophyceae Wille (1884) - chlorophytes
       5 Class Characeae Agardh (1824) [monotypic]
       6 Class Phaeophyceae Hansgirg (1886) - brown algae
       7 Class Dictyotales [monotypic]
       8 Class Rhodophyceae Thuret (1855) - red algae see Phylum Rhodophyta Wettst. (1901)