Photo Gallery

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P. cactorum bleeding canker

Bleeding canker on red oak (Quercus rubra)

P. tentaculata hyphae

Looping hyphae commonly seen with P. tentaculata on PARP media

P. ramorum oogonium

Oogonium with thick oogonial wall, photo from Q-bank, used with permission

P. alni canker on gray alder

Grey alder (A. incana) with collar rot caused by P. alni

P. tentaculata disease symptoms on sticky monkey flower

Outplanted sticky monkey flower (Diplacus aurantiacus) infected with P.
tentaculata 1.5 years after outplanting. Plant shows severe stunting and dieback.

P. nicotianae oogonia

P. nicotianae oogonia 100x. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands)

P. cambivora on dead and dying chinquapin

Dead and dying chinquapin infected with P. cambivora

P. pseudosyringae hyphal swellings

Sub-globose hyphal swellings in water

P. megakarya oospore

 

 

 

P. megakarya oogonia, oospore, and antheridium

 

 

Basal canker on Port Orford Cedar stump

P. kernoviae leaf wilt

Necrosis of rhododendron leaves.

Phytophthora cactorum canker on beech tree

Canker on Fagus sp. caused by Phytophthora cactorum.

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