Oogonium with paragynous antheridia applied close to the ogonial stalk.
Photo Gallery
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P. megasperma oogonium  |
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. |
P. agathidicida lesion on kauri tree  Close up of gum oozing out of lower trunk lesions of a young kauri tree at Maungaroa Ridge, Piha region of Waitakere Regional Park |
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P. ramorum chlamydospores  P. ramorum chlamydospores |
P. katsurae sporangia  Papillate, non-caducous sporangium with differentiated content; photo used with permission from Q-bank |
P. pinifolia sporangium  Cysts remain in sporangium after discharge, photo from Q-bank, used with permission |
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Growth of P. megakarya on PDA  Growth of P. megakarya on potato dextrose agar |
P. palmivora chlamydospore  Terminal chlamydospore of P. palmivora |
P. ramorum sporangium  P. ramorum sporangium |
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P. megakarya chlamydospore 
Terminal chlamydospore of P. megakarya
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P. agathidicia disease symptoms on kauri  Crown decline of mature kauri, with branchlets with little or no leaves |
P. austrocedrae colony morphology on PDA  Colony morphology of P. austrocedrae at 16 C after four weeks on PDA |