[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Domain Bacteria Woese et al. 1990
     Phylum "Proteobacteria" Garrity et al. 2005 see Superphylum Proteobacteria Craig et al. 2010
       Class Gammaproteobacteria Garrity et al. 2005
         Order "Enterobacteriales" Garrity and Holt 2001 nom. nud.
           Family Enterobacteriaceae Rahn 1937 (Approved Lists 1980)
             Genus Erwinia Winslow et al. 1920 (Approved Lists 1980)
               01 Erwinia amylovora (Burrill 1882) Winslow et al. 1920 (Approved Lists 1980)
               02 Erwinia aphidicola Harada et al. 1998
               03 Erwinia billingiae Mergaert et al. 1999
               04 Erwinia cypripedii (Hori 1911) Bergey et al. 1923 (Approved Lists 1980) see Pantoea cypripedii (Hori 1911) Brady et al. 2010
               05 Erwinia mallotivora Goto 1976 (Approved Lists 1980)
               06 Erwinia papayae Gardan et al. 2004
               07 Erwinia persicina corrig. Hao et al. 1990
               08 Erwinia psidii Neto et al. 1988
               09 Erwinia pyrifoliae Kim et al. 1999
               10 Erwinia rhapontici (Millard 1924) Burkholder 1948 (Approved Lists 1980)
               11 Erwinia toletana Rojas et al. 2004
               12 Erwinia tracheiphila (Smith 1895) Bergey et al. 1923 (Approved Lists 1980)