Web Blight of Madagascar Periwinkle in Alabama. A. K. Hagan, Auburn University, Auburn, AL 36849. J. M. Mullen, Auburn University, Auburn, AL 36849. Plant Dis. 77:1169. Accepted for publication 2 August 1993. Copyright 1993 The American Phytopathological Society. DOI: 10.1094/PD-77-1169E.