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P. cactorum sporangium

P. cactorum sporangium

P. lateralis on Port Orford cedar

Lesion caused by aerial infection on Chaemacyparis lawsoniana in Lopérec, France

Growth of P. arenaria on V8

Colony morphology of Phytophthora arenaria after 7 days at 20°C on V8 agar

P. chlamydospora chlamydospore

Phytophthora chlamydospora chlamydospore in agar. Bar is 20 µm.

P. cinnamomi colony morphology on PDA

P. cinnamomi colony growth on PDA at 14 days

P. katsurae disease symptoms

Infected chestnut (Castanea) with girdling canker

P. cambivora colony morphology on MA

Appressed stellate colony morphology at 14 days at 20°C on MA

P. pluvialis hyphal swellings

P. pluvialis hyphal swellings in water

P. megasperma oogonium

Oogonium with paragynous antheridia applied close to the ogonial stalk.

P. pinifolia sporulation

Sporulation on edge of hemp seed, photo from Q-bank, used with permission.

P. cactorum oogonium

Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic.

Black pod disease of cacao caused by P. palmivora

Black pod of cacao in Ecuador caused by P. palmivora (see lesioned fruit on left).

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