plantenrijk Haeckel (1866) - plants
Count: -
   [Division] Protophyta Sachs 1874 - primitive plants
  Count: -
     Class Schizomycetes Nägeli 1857 (Approved Lists 1980) - bacteria and related forms
    Count: [g] 8o;29f;66g;5s
       Order Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)
      Count: [*] 7f;17g
         Family Nitrobacteriaceae see Family Bradyrhizobiaceae Garrity et al. 2001 nom. ined.
        Count: [*] 3g
           Genus Nitrosococcus Winogradsky 1892 (Approved Lists 1980)
          Count: -