Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         [crown] Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 1990 [paraphyletic?]
             Superphylum "Proteobacteria" Craig et al. 2010
               Phylum "Alphaproteobacteria" Garrity et al., 2006 [monotypic]
                 Class Alphaproteobacteriaᵀ Garrity et al. 2006
                   Order Rhizobiales Kuykendall 2006
                     Family Rhizobiaceaeᵀ Conn 1938 (Approved Lists 1980)
                       Genus Rhizobiumᵀ Frank 1889 (Approved Lists 1980)
                         01 Rhizobium alamii Berge et al. 2009
                         02 Rhizobium cellulosilyticum García-Fraile et al. 2007
                         03 Rhizobium daejeonense Quan et al. 2005
                         04 Rhizobium etli Segovia et al. 1993
                         05 Rhizobium fabae Tian et al. 2008
                         06 Rhizobium galegae Lindström 1989
                         07 Rhizobium gallicum Amarger et al. 1997
                         08 Rhizobium giardinii Amarger et al. 1997
                         09 Rhizobium hainanense Chen et al. 1997
                         10 Rhizobium huautlense Wang et al. 1998
                         11 Rhizobium indigoferae Wei et al. 2002
                         12 Rhizobium larrymoorei (Bouzar and Jones 2001) Young 2004
                         13 Rhizobium leguminosarumᵀ (Frank 1879) Frank 1889 (Approved Lists 1980)
                         14 Rhizobium loessense Wei et al. 2003
                         15 Rhizobium lupini (Schroeter 1886) Eckhardt et al. 1931 (Approved Lists 1980)
                         16 Rhizobium lusitanum Valverde et al. 2006
                         17 Rhizobium miluonense Gu et al. 2008
                         18 Rhizobium mongolense Van Berkum et al. 1998
                         19 Rhizobium multihospitium Han et al. 2008
                         20 Rhizobium oryzae Peng et al. 2008
                         21 Rhizobium phaseoli Dangeard 1926 (Approved Lists 1980)
                         22 Rhizobium pisi Ramírez-Bahena et al. 2008
                         23 Rhizobium radiobacter (Beijerinck and van Delden 1902) Young et al. 2001
                         24 Rhizobium rhizogenes (Riker et al. 1930) Young et al. 2001
                         25 Rhizobium rubi (Hildebrand 1940) Young et al. 2001
                         26 Rhizobium selenitireducens corrig. Hunter et al. 2008
                         27 Rhizobium sullae Squartini et al. 2002
                         28 Rhizobium trifolii Dangeard 1926 (Approved Lists 1980)
                         29 Rhizobium tropici Martínez-Romero et al. 1991
                         30 Rhizobium undicola (de Lajudie et al. 1998) Young et al. 2001
                         31 Rhizobium vitis (Ophel and Kerr 1990) Young et al. 2001
                         32 Rhizobium yanglingense Tan et al. 2001