Signs and symptoms of Cytospora canker/dieback in various fruit and nut crops in California. A–B. Gumming and underlying elongated canker associated with Cytospora canker in almond. C. Cytospora associated cankers in olive twigs. D. Cankers and wood discoloration associated with Cytospora in pistachio. E. Conidial masses exuding from Cytospora asexual fruiting bodies in walnut.