Kingdom Pflanzenreich Haeckel (1866) - plants
   Thallophyta
     1 Phylum Schizophyta see Division Bacteria (Haeckel 1894)
     2 Phylum Monadophyta
     3 Phylum Myxophyta
     4 Phylum Conjugatophyta Engler, 1892
     5 Phylum Bacillariophyta Engl. & Gilg (1919) - diatoms see [unranked] Diatomea Kütz. (1844)
     6 Phylum Phaeophyta Kjellman (1891) see Phylum Phaeophycota
     7 Phylum Rhodophyta Wettst. (1901) - red algae
     8 Phylum Euthallophyta