Oak wilt

Oak wilt is a fungal disease that can quickly kill an oak tree. It is caused by the fungus Ceratocystis fagacearum. Symptoms vary by tree species but generally consist of leaf discoloration, wilt, defoliation, and death. The fungus is spread from diseased to healthy trees by insect vectors or via connections between tree roots. Management of the d...
Found on http://en.wikipedia.org/wiki/Oak_wilt

oak wilt

(from the article `wilt`) Oak wilt, caused by the fungus Ceratocystis fagacearum, is a serious disease in the eastern half of the United States. All oaks (Quercus) are ...
Found on http://www.britannica.com/eb/a-z/o/1
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