Dead Banksia sp. in a Kwongan heathland on mineral sand near Eneabba, Western Australia recently killed by root and collar rot caused by Phytophthora arenaria
Photo Gallery
P. arenaria disease symptoms on Banksia landscape |
P. austrocedrae - Mal del ciprés in Argentina Mal del ciprés looking toward Rio Grande, Chubut Province, Argentina |
P. nicotianae oogonia P. nicotianae oogonia 100x. Photo from Q-bank: www.q-bank.eu, Henk Brouwer (CBS-KNAW, Utrecht, The Netherlands) |
P. alni symptoms on European Alder Mature, riparian common alder (A. glutinosa) stand heavily impacted by root and collar rot caused by P. alni |
Dead Port Orford Cedar Dead Chamaecyparis lawsoniana, BLM Roseburg District in Oregon |
P. agathidicida sporangium Globose to ovoid-ellipsoid, papillate sporangium |
P. agathidicida oospores Oospores of P. agathidicida in the roots of kauri seedlings inoculated with P. agathidicida. The root has been cleared with potassium hydroxide and bleached with peroxide, before being stained with Trypan Blue |
P. austrocedrae oogonium Oogonia with and without brown pigment, photo from Q-bank, used with permission |
P. pinifolia on Pinus radiata Pinus radiata stand, note Defoliation and regrowth |
P. siskiyouensis disease symptoms on Italian alder Grove of dying trees in a commercial landscape in Foster City, CA |
P. cactorum bleeding canker Bleeding canker on European beech (Fagus sylvatica) |
P. lateralis on Port Orford cedar Dying Chaemacyparis lawsoniana trees in Lopérec, France. |