Phytophthora collar rot on Italian alder trees: standing, dead tree
Photo Gallery
P. siskiyouensis disease symptoms on Italian alder |
P. siskiyouensis bleeding canker Close-up of margin area of bole lesions under the bark of a bleeding canker |
P. cinnamomi sporangium P. cinnamomi sporangium |
P. pinifolia sporangium Cysts remain in sporangium after discharge, photo from Q-bank, used with permission |
Necrotic lesion in phloem caused by P. austrocedrae Necrotic lesion in phloem with resin pocket caused by P. austrocedrae |