Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Domain Bacteria Woese et al. 2024
             Kingdom Pseudomonadati (Gibbons and Murray 1978) Oren and Göker 2024
               Phylum Pseudomonadotaᵀ Garrity et al. 2021
                 Class Alphaproteobacteria Garrity et al. 2006
                   Order Hyphomicrobiales Douglas 1957 (Approved Lists 1980)
                     Family Beijerinckiaceae Garrity et al. 2006
                       Genus Beijerinckiaᵀ Derx 1950 (Approved Lists 1980)
                         1 Beijerinckia derxii Tchan 1957 (Approved Lists 1980)
                         2 Beijerinckia doebereinerae Oggerin et al. 2009
                         3 Beijerinckia fluminensis Döbereiner and Ruschel 1958 (Approved Lists 1980)
                         4 Beijerinckia indica (Starkey and De 1939) Derx 1950 (Approved Lists 1980)
                         5 Beijerinckia mobilis Derx 1950 (Approved Lists 1980)