[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990 stat. inval. see Domain Bacteria Woese et al. 2024
     Phylum "Proteobacteria" Garrity et al. 2005 stat. inval. see Phylum Pseudomonadota Garrity et al. 2021
       Class Alphaproteobacteria Garrity et al. 2006
         Order Rhizobiales Kuykendall 2006 see Order Hyphomicrobiales Douglas 1957 (Approved Lists 1980)
           Family Bradyrhizobiaceae Garrity et al. 2006 see Family Nitrobacteraceae corrig. Buchanan 1917 (Approved Lists 1980)
             Genus Blastobacter Zavarzin 1961 (Approved Lists 1980)
               Blastobacter aggregatus Hirsch and Müller 1986