plantenrijk Haeckel (1866) - plants
   [Division] Protophyta Sachs 1874 - primitive plants
     Class Schizomycetes Nägeli 1857 (Approved Lists 1980) - bacteria and related forms
       Order Eubacteriales Buchanan 1917 (Approved Lists 1980) see Order Clostridiales Prévot 1953 (Approved Lists 1980)
         Family Enterobacteriaceae Rahn 1937 (Approved Lists 1980)
           1 Genus Aerobacter
           2 Genus Escherichia Castellani and Chalmers 1919 (Approved Lists 1980)
           3 Genus Klebsiella Trevisan 1885 (Approved Lists 1980)
           4 Genus Paracolobactrum
           5 Genus Proteus Hauser 1885 (Approved Lists 1980)
           6 Genus Salmonella Lignieres 1900 (Approved Lists 1980)
           7 Genus Shigella Castellani and Chalmers 1919 (Approved Lists 1980)