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Angular leaf spot on winter squash leaves

Angular leaf spot, caused by Pseudomonas syringae pv. lachrymans, symptoms on butternut squash (Cucurbita moschata)
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY


Angular leaf spot, caused by the bacterium Pseudomonas syringae pv. lachrymans, can infect all cucurbit species. Veins can limit the enlargement of spots, as illustrated here on a butternut leaf.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY


Angular leaf symptoms on Turk's Turban (C. maxima)
Photo courtesy of Cornell University, Ithaca, NY


Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY


Angular leaf spots on blue hubbard squash
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY