Figure 3. Stemphylium leaf spot (Stemphylium botryosum). Photo Credit: Courtesy R. A. Kilpatrick—© APS. Reproduced, by permission, from Samac, D. A., Rhodes, L. H., and Lamp, W. O., eds. 2014. Compendium of Alfalfa Diseases and Pests, 3rd ed. American Phytopathological Society, St. Paul, MN.