[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 Beijerinckiaceae Garrity et al. 2006
             Genus Beijerinckia Derx 1950 (Approved Lists 1980)
               1 [Beijerinckia indica] (Starkey and De 1939) Derx 1950 (Approved Lists 1980)
               2 [Beijerinckia derxii] Tchan 1957 (Approved Lists 1980)
               3 Beijerinckia fluminensis Döbereiner and Ruschel 1958 (Approved Lists 1980)
               4 Beijerinckia mobilis Derx 1950 (Approved Lists 1980)