Cowberry Redleaf Exobasidium vaccinii (Fuckel) Woronin (illustrated 80% life size) Fruit body forming a whitish or pinkish, powdery, spore-bearing layer on gall-like, thickened, distorted leaves and shoots. Spores 10–20×2.5–5¼, elongate, becoming 3-septate at maturity; white. Habitat leaves and young shoots or flowers of members of the Ericaceae, especially Vaccinium; late spring to autumn. Occasional. Not edible.