Rhizobium Frank 1889 (Approved Lists 1980) emend. Young et al. 2001 Dataset NCBI Taxonomy Classification kingdom Pseudomonadati phylum Pseudomonadota class Alphaproteobacteria order Hyphomicrobiales family Rhizobiaceae genus Rhizobium Name Homonyms Rhizobium/Agrobacterium group Rhizobium Rhizobium BR816 Rhizobium IRc78 Rhizobium MPIK3030 Rhizobium Frank 1889 (Approved Lists 1980) emend. Young et al. 2001