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 Gammaproteobacteriaᵀ Garrity et al. 2005
                   Order Enterobacterales Adeolu et al. 2016
                     Family Erwiniaceae Adeolu et al. 2016
                       1 Genus Buchnera Munson et al. 1991 [monotypic]
                       2 Genus Duffyella Soutar and Stavrinides 2023
                       3 Genus Erwiniaᵀ Winslow et al. 1920 (Approved Lists 1980)
                       4 Genus Mixta Palmer et al. 2018
                       5 Genus Pantoea Gavini et al. 1989
                       6 Genus Phaseolibacter Halpern et al. 2013 [monotypic]
                       7 Genus Tatumella Hollis et al. 1982 [monotypic]
                       8 Genus Wigglesworthia Aksoy 1995 [monotypic]
                       9 Genus "Paramixta" Kim et al. 2024 nom. inval.