All along the understory walk/Cataract Trail
Doesn't effect the bay tree
saw this sudden oak death on a tree on campus.
Sudden oak death on my favorite oak tree on campus.
Blackened, weeping cracks in the bark, some crown death, no sign of Hypoxylon or beetle infestation yet. SOD is pretty well-established in this park, sadly.
I found an instance of phytophthora ramorum growing on the bark of a Coast Live Oak on the UC Berkeley campus. This affliction causes sudden oak death and is quite prevalent on the Western United States.
Oomycota or oomycetes (oömycetes) form a distinct phylogenetic lineage of fungus-like eukaryotic microorganisms. They are filamentous, microscopic, absorptive organisms that reproduce both sexually and asexually. Oomycetes occupy both saprophytic and pathogenic lifestyles – and include some of the most notorious pathogens of plants, causing devastating diseases such as late blight of potato and sudden oak death. They are also often referred to as water molds (or water moulds), although the water-preferring nature which led to that...