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.
       1 Order Pseudomonadales Orla-Jensen 1921 nom. inval. see Order Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)
       2 Order Eubacteriales Buchanan 1917 nom. inval. see Order Eubacteriales Buchanan 1917 (Approved Lists 1980)
       3 Order Chlamydobacteriales Buchanan 1917 nom. inval.
       4 Order Actinomycetales Buchanan 1917 nom. inval.
       5 Order Myxobacteriales (sic) "Jahn 1915" nom. inval.
       6 Order Spirochaetales Buchanan 1917 nom. inval. see Order Spirochaetales Buchanan 1917 (Approved Lists 1980)
       7 Order Beggiatoales Buchanan 1957 nom. inval. see Order Beggiatoales Buchanan 1957 (Approved Lists 1980)
       8 Order Hyphomicrobiales Douglas 1957 nom. inval. see Order Hyphomicrobiales Douglas 1957 (Approved Lists 1980)