Host:Canary Island date palm (Phoenix canariensis
hort. ex Chabaud) Descriptor: Sign Description: Sori of Graphiola phoenicis have erupted through the leaf epidermis. Some of the sori have filaments emerging from them. The mostly brown spots are not a symptom of Graphiola leaf spot, but a symptom of potassium deficiency. Image type: Field Image location: , United States
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Image Citation:(?) Monica Elliott, University of Florida, Bugwood.org