Port-Orford-cedar seedlings planted to test for Phytophthora lateralis resistance at the Dorena Genetic Resource Center
Photo Gallery
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Dead and healthy Port-Orford cedar seedlings  |
P. cambivora disease symptoms  Dead and dying chinquapin infected with P. cambivora |
P. alni oogonium  Bullate oogonium of P. alni (German variant) with oospore and amphigynous antheridium. |
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P. pinifolia colony morphology on V8  Colony pattern after 7 days on V8 at 24C, photo from Q-bank, used with permission |
P. siskiyouensis disease symptoms on Italian alder  Phytophthora collar rot on Italian alder trees: standing, dead tree |
P. austrocedrae irregular sporangium  P. austrocedrae - irregular sporangium with lateral attachment and swelling in sporangiophore |
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P. pseudosyringae sporangium  Ovoid, semipapillate sporangia showing medium length pedicel |
P. cactorum bleeding canker  Bleeding canker on red oak (Quercus rubra) |
Necrotic lesion in phloem caused by P. austrocedrae  Necrotic lesion in phloem with resin pocket caused by P. austrocedrae |
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P. pseudotsugae colony morphology on PDA  P. pseudotsugae colony growth on PDA agar |
P. siskiyouensis canker on Italian alder  Phytophthora collar rot on Italian alder trees: an isolated bleeding canker on the trunk |
P. ramorum oogonium  Oogonium with thick oogonial wall, photo from Q-bank, used with permission |