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 Rhizobiaceae Conn 1938 (Approved Lists 1980) 01 Genus Affinirhizobium Ma et al. 2025 02 Genus Agrobacterium Conn 1942 (Approved Lists 1980) nom. cons. 03 Genus Aliirhizobium corrig. Ma et al. 2024 04 Genus Allorhizobium de Lajudie et al. 1998 05 Genus Ciceribacter Kathiravan et al. 2013 [monotypic] 06 Genus Endobacterium Menéndez et al. 2021 07 Genus Ensifer Casida 1982 08 Genus Ferirhizobium corrig. Romanenko et al. 2024 09 Genus Ferranicluibacter Roca-Couso et al. 2023 10 Genus Flavimaribacter Wang et al. 2024 11 Genus Gellertiella Tóth et al. 2017 12 Genus Georhizobium Cao et al. 2020 13 Genus Heterorhizobium Ma et al. 2025 14 Genus Hoeflea Peix et al. 2005 15 Genus Lentilitoribacter Park et al. 2013 16 Genus Liberibacter Fagen et al. 2014 [monotypic] 17 Genus Martelella Rivas et al. 2005 18 Genus Mycoplana Gray and Thornton 1928 (Approved Lists 1980) 19 Genus Neorhizobium Mousavi et al. 2015 20 Genus Onobrychidicola Ashrafi et al. 2023 21 Genus Oryzifoliimicrobium Liu et al. 2025 22 Genus Pararhizobium Mousavi et al. 2016 23 Genus Pseudohoeflea Hyeon et al. 2017 24 Genus Pseudorhizobium Kimes et al. 2017 25 Genus Rhizobiumᵀ Frank 1889 (Approved Lists 1980) nom. cons. 26 Genus Shinella An et al. 2006 27 Genus "Allopararhizobium" Ma et al. 2023 nom. inval. 28 Genus "Ectorhizobium" Ma et al. 2023 nom. inval. 29 Genus "Paramartelella" Ma et al. 2023 nom. inval. 30 Genus "Candidatus Liberibacter" corrig. Jagoueix et al. 1994 31 Genus "Candidatus Reichenowia" Siddall et al. 2004 nom. pro-inval.