Position in a system
| system | Vitae - living organisms |
| domain | Bacteria (Haeckel, 1894) Woese, Kandler Wheelis, 1990 - bacterians |
| phylum | Proteobacteria E.Stackebrandt,E.G.E.Murray & H.G.Trüper,1988 |
| class | Gammaproteobacteria Garrity, Bell & Lilburn, 2006 |
| order | Enterobacteriales |
| family | Enterobacteriaceae Rahn, 1937 |
| genus | Erwinia Winslow, Broadhurst, Buchanan, Krumweide, Rogers & G.H. Smith, 1920 |
| species | Erwinia amylovora (Burrill 1882) Winslow et al. 1920 - Fire Blight |