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
Specimen in collection: No Specimen Condition: Identification Method:
You must attribute the work in the manner specified (but not in any way that suggests endorsement). You may not use this work for commercial purposes unless permission is granted by the photographer or copyright owner.
Image Citation:(?) Monica Elliott, Symptoms of Palm Diseases and Disorders, USDA APHIS ITP, Bugwood.org