Races of Puccinia graminis in the United States during 1993. A. P. Roelfs, Research Plant Pathologist, and D. L. Long, Plant Pathologist, Cereal Rust Laboratory, USDA, Agricultural Research Service, University of Minnesota, St. Paul 55108; and J. J. Roberts, Research Plant Pathologist, USDA, Agricultural Research Service, Georgia Agricultural Experiment Station, Experiment 30212. Plant Dis. 79:969-972. Copyright 1995 American Phytopathological Society. DOI: 10.1094/PD-79-969.