1) Bacteria family 2) Family rhizobiaceae 
==Phylogeny== The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) and National Center for Biotechnology Information (NCBI) and the phylogeny is based on 16S rRNA-based LTP release 106 by The All-Species Living Tree Project ...
A family of gram-negative bacteria which are saprophytes, symbionts, or plant pathogens. ... (12 Dec 1998) ... 
[n] - a small family of rod-shaped bacteria
family Rhizobiaceae noun a small family of rod-shaped bacteria