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Septoria on pumpkin/gourd leaves

Extent of Septoria leaf spot occurrence on pumpkin leaf following a cool and wet summer season.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY


Closeup of Septoria pycnidia embedded in pumpkin tissue.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

Many scattered whitish spots of Septoria cucurbitacearum on pumpkin leaf.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

Microscopic appearance of a single pycnidium releasing many threadlike spores of Septoria cucurbitacearum.Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

Needlelike spores of Septoria cucurbitacearum.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY

Closeup of whitish spots reveals small, black specklike fruiting bodies (pycnidia) of Septoria cucurbitacearum.
Photo courtesy of T.A. Zitter, Cornell University, Ithaca, NY