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 Nitrobacteraceae corrig. Buchanan 1917 (Approved Lists 1980)
                       Genus Rhodopseudomonas Czurda and Maresch 1937 (Approved Lists 1980) nom. cons.
                         1 Rhodopseudomonas faecalis Zhang et al. 2002
                         2 Rhodopseudomonas julia Kompantseva 1993
                         3 Rhodopseudomonas palustrisᵀ (Molisch 1907) van Niel 1944 (Approved Lists 1980)
                         4 Rhodopseudomonas rhenobacensis Hougardy et al. 2000