plantenrijk Haeckel (1866) - plants
   [Division] Protophyta Sachs (1874) - primitive plants
     Class Schizomycetes Nägeli 1857 nom. inval. - bacteria and related forms see Class Schizomycetes Nägeli 1857 (Approved Lists 1980) nom. illeg., nom. rej.
       Order Eubacteriales Buchanan 1917 nom. inval. see Order Eubacteriales Buchanan 1917 (Approved Lists 1980)
         Family Achromobacteriaceae (sic) Breed 1945 nom. inval. see Family Alcaligenaceae De Ley et al. 1986
           1 Genus Achromobacter Bergey et al. 1923 nom. inval.
           2 Genus Agarbacterium Angst 1929 nom. inval.
           3 Genus Alcaligenes Castellani and Chalmers 1919 nom. inval.
           4 Genus Flavobacterium Bergey et al. 1923 nom. inval.