Blackleaf and Other Potato Diseases Caused by Soft Rot Erwinia: Proposal for Revision of Terminology. M. C. M. Pérombelon, Scottish Crop Research Institute, Invergowrie, Dundee DD2 5DA, Scotland, and A. Kelman, Department of Plant Pathology, University of Wisconsin, Madison 53706. Plant Dis. 71:283. Copyright 1987 American Phytopathological Society. DOI: 10.1094/PD-71-283.