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. 1990 [paraphyletic?]
             Superphylum "Proteobacteria" Craig et al. 2010
               Phylum "Gammaproteobacteria" Garrity et al., 2005 [monotypic]
                 Class Gammaproteobacteriaᵀ Garrity et al. 2005
                   Order "Enterobacteriales" Garrity and Holt 2001 nom. nud. [monotypic]
                     Family Enterobacteriaceaeᵀ Rahn 1937 (Approved Lists 1980)
                       Genus Erwinia Winslow et al. 1920 (Approved Lists 1980)
                         Erwinia amylovora (Burrill 1882) Winslow et al. 1920 (Approved Lists 1980)
                         Erwinia aphidicola Harada et al. 1998
                         Erwinia billingiae Mergaert et al. 1999
                         Candidatus "Erwinia dacicola" Capuzzo et al. 2005
                         Erwinia mallotivora Goto 1976 (Approved Lists 1980)
                         Erwinia oleae Moretti et al. 2011
                         Erwinia papayae Gardan et al. 2004
                         Erwinia persicina corrig. Hao et al. 1990
                         Erwinia piriflorinigrans López et al. 2011
                         Erwinia psidii Neto et al. 1988
                         Erwinia pyrifoliae Kim et al. 1999
                         Erwinia rhapontici (Millard 1924) Burkholder 1948 (Approved Lists 1980)
                         Erwinia tasmaniensis Geider et al. 2006
                         Erwinia toletana Rojas et al. 2004
                         Erwinia tracheiphila (Smith 1895) Bergey et al. 1923 (Approved Lists 1980)
                         Erwinia typographi Skrodenytė-Arbačiauskienė et al. 2012
                         Erwinia uzenensis Matsuura et al. 2012