Dead Banksia sp. in a Kwongan heathland on mineral sand near Eneabba, Western Australia recently killed by root and collar rot caused by Phytophthora arenaria
Photo Gallery
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P. arenaria disease symptoms on Banksia  |
P. agathidicida sporangium  Globose to ovoid-ellipsoid, papillate sporangium |
P. megasperma sporangia  Ovoid, non-papillate sporangia showing internal proliferation of sporangiophore |
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P. frigida oogonium  Oogonium and oospore with amphigynous antheridium |
P. kernoviae sporangium  Asymmetrical sporangium, photo from Q-bank, used with permission |
Growth of P. megakarya on V8 agar  Growth of P. megakarya on V8 agar |
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P. kernoviae sporangia  Mycol.Res 109, 853-859; Figs 18-22. Regular, ovoid limoniform sporangia. Figs 23-26. Asymmetrical or sporangia |
P. ramorum oogonium  Oogonium with thick oogonial wall, photo from Q-bank, used with permission |
P. cinnamomi on Jarrah  Dieback in Jarrah, Western Australia |
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P. frigida sporangia  Noncaducous sporangia showing ovoid shape and papillate condition |
P. lateralis sporangia  Sympodial sporangiophore with external proliferation |
P. kernoviae leaf wilt  Wilted leaf of infected rhododendron |