The following image shows leaves from a tree with Oak Wilt.
Here is a photo of leaves from a Live Oak tree that has Oak Wilt.
These were leaves that Chris Dolan brought to our quarterly meeting back in March 2007. I dared to take them home and scan them in. So far, our trees are fine. IF YOUR LIVE OAK TREE LEAVES HAVE THESE RED VEINS, GET THEM TREATED ASAP!!!
– Karen Gregory