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).
Photo Gallery
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Comparative gametangial morphology of Phytophthora Clade 5 species  |
P. cambivora colony morphology on MA  Appressed colony morphology at 14 days at 20°C on MA |
Phytophthora cactorum disease symptoms on English walnut  Mortality of Juglans regia caused by Phytophthora cactorum. |
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P. palmivora sporangia
 P. palmivora caducous papillate sporangia
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P. agathidicia oogonia  Light micrograph of P. agathidicida oospore (Scale bar equals 15 µm) |
P. cambivora coralloid hyphae  Coralloid hyphae with hyphal swelling-like structures |
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P. cryptogea hyphal swellings  Cluster of small, angular to globose hyphal swellings formed in water |
P. austrocedrae hyphal swellings in liquid media drawing  Morphology of hyphae of Phytophthora austrocedrae, from Greslebin et al. 2007 |
P. austrocedrae oogonium  Oogonia with and without brown pigment, photo from Q-bank, used with permission |
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P. cambivora older hyphae  Old septate hyphae |
P. cambivora symptoms  P. cambivora on Fagus sylvatica bole |
P. megasperma colony morphology on V8  Colony morphology on V8 at 7 days |