Aplerotic oogonia of P. arenaria with paragynous antheridia. Scale bar = 20 μm
Photo Gallery
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P. arenaria oogonium  |
Comparative gametangial morphology of Phytophthora Clade 5 species  Comparative gametangial morphology of Phytophthora Clade 5 species, with SEM (top) and light microscopy (bottom). P. heveae has smooth walled oogonia with funnel-shaped, amphigynous antheridia. P. agathidicida has mildly stipulate oogonia with globose amphigynous antheridia. P.cocois has mildly bullate oogonia with reflexed amphigynous antheridia. P. castaneae has coarsely bullate oogonium with rugose protuberances and narrow amphigynous antheridia (Weir et al. 2015). |
P. megakarya oospore
P. megakarya oogonia, oospore, and antheridium
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P. cambivora sporangium  Ovoid non-papillate sporangia with well-rounded base and simple sporangiophore |
P. lateralis on Port Orford cedar  Bole lesion on Chaemacyparis lawsoniana in Lopérec, France |
P. siskiyouensis canker on Italian alder  Phytophthora collar rot on Italian alder trees: an isolated bleeding canker on the trunk |
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P. megakarya sporangia (photo from Q-bank, used with permission).  P. megakarya sporangia |
P. lateralis colony morphology on PDA  Growth morphology on PDA of Phytophthora lateralis |
Dying Port Orford Cedar trees  |
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P. lateralis on Port Orford cedar  Dying Chaemacyparis lawsoniana trees in Lopérec, France. |
P. austrocedrae oogonia drawing  P. austrocedrae. Morphology of oogonia, oospores and antheridia. Bar: 10 mm. Greslebin et al. 2007 |
Black pod disease of cacao caused by P. palmivora  Black pod of cacao in Ecuador caused by P. palmivora (see lesioned fruit on left). |