Oogonium with paragynous antheridia close to oogonial stalk. Oospores are slightly aplerotic.
Photo Gallery
P. cactorum oogonium |
Phytophthora chlamydospora sporangium Phytophthora chlamydospora sporangia in water, showing internal proliferation. Bar is 20 µm. |
P. pseudosyringae sporangia Ovoid, semipapillate sporangia showing sympodial development of sporangiophore |
P. megakarya disease symptoms on Theobroma cacao fruit Disease symptoms on a cocoa pod |
P. cinnamomi on Fraser fir Frasier fir Christmas trees, North Carolina |
P. kernoviae canker Bole lesion on Fagus sylvatica |
P. kernoviae leaf wilt Necrosis of rhododendron leaves. |
P. tentaculata disease symptoms on California mugwort Outplanted California mugwort (Artemisia douglasiana) infected with P. tentaculata, 4.5 years after planting. Plant shows stunting and chlorosis. (P. cryptogea and P. lacustris were also baited from roots/soil of this plant). |
P. katsurae disease symptoms Infected chestnut tree with girdling canker on stem |
P. kernoviae disease on beech External lesion; 14 November 2003 |
P. megakarya chlamydospore
Terminal chlamydospore of P. megakarya
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P. arenaria oogonium Aplerotic oogonia of P. arenaria with paragynous antheridia. Scale bar = 20 μm |