Bacteria | Pseudomonadota | Alphaproteobacteria | Rhizobiales | Rhizobiaceae | Rhizobium
Bacteria | Negibacteria | Proteobacteria | Alphaproteobacteria | Rhizobiales | Rhizobiaceae | Rhizobium
Cavalier-Smith, 2002 | Cavalier-Smith, 2002 | Garrity et al., 2005 | Garrity et al., 2006 | Kuykendall, 2006 | Conn, 1938 | Frank, 1889 emend. Young et al., 2001