Valdensinia Leaf-spot on Wild Blueberries (Publisher) Valdensinia Leaf-spot on Wild Blueberries (PDF) Prepared by Dr. Seanna Annis, Blueberry Pathologist, School of Biology and Ecology and Dr. David Yarborough, Extension Blueberry Specialist, University of Maine, Orono, ME, USA with information provided by Dr. Paul Hildebrand, Plant Pathologist, Atlantic Food and Horticulture Research Centre, Agricuture and Agri-Food