Ovoid, semi-papillate sporangia showing sympodial development of sporangiophore
Photo Gallery
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P. nemorosa sporangia  |
P. pluvialis on Pinus radiata in New Zealand  A stand of Pinus radiata trees affected by red needle cast disease. Note the reddish appearance of affected trees prior to needle drop. |
P. agathidicida growth on CMA  Diffuse, non-patterned, colony morphology of ICMP 16471 (the original “Gadgil isolate”) after 10-days incubation at 20°C in the dark |
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P. agathidicia disease symptoms on kauri  Crown decline of mature kauri, with branchlets with little or no leaves |
P. katsurae disease symptoms  Infected chestnut (Castanea) with bleeding canker |
P. nicotianae hyphal swelling  P. nicotianae hyphal swellings in water 100x. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |
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P. nicotianae colony morphology on PDA  Phytophthora nicotianae CBS 321.49 PDA after 7 days at 24 degrees. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |
P. frigida oogonium  Oogonium and oospore with amphigynous antheridium |
P. megakarya disease symptoms on Theobroma cacao fruit  Disease symptoms on a cocoa pod |
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P. ramorum bleeding canker  Bark cracks with black ooze in coast live oak, a symptom of P. ramorum canker. |
P. cryptogea colony morpholgy on V8  Colony morphology on V8 at 14 days |
P. ramorum sporangium  Deciduous sporangium, photo from Q-bank, used with permission |