Broadly ovoid, papillate sporangia in water.
Photo Gallery
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P. cactorum sporangia  |
P. palmivora colony morphology on V8  Growth of P. palmivora on V8 agar |
P. pluvialis on Pinus radiata in New Zealand  Typical red needle cast symptoms along a twig. Lesions begin at the base of the needle which subsequently turns brown and is cast from the twig. |
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P. pluvialis symptoms on Douglas-fir needles  Symptoms of red needle cast on Douglas-fir needles |
P. pluvialis oogonium and antheridium  Oogonium and oospore with amphigynous antheridium |
P. nemorosa sporangia  Ovoid, semi-papillate sporangia showing sympodial development of sporangiophore |
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P. alni in riparian alder, Germany  P. alni in riparian alder, Germany |
P. frigida chlamydospore  Globose chlamydospores of P. frigida |
Growth of P. arenaria on CA  Colony morphology of Phytophthora arenaria after 7 days at 20°C on carrot agar |
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P. cryptogea hyphal swellings  Cluster of small, angular to globose hyphal swellings formed in water |
P. cambivora colony morphology on PDA  Colony morphology on PDA at 14 days |
P. pluvialis on Pinus radiata in New Zealand  Lesions consistent with the presence of red needle cast disease are more abundant at the base of Pinus radiata needles as indicated by the arrow. |