1 Iritis is uncommon, but can be due to trauma, infections, or autoimmune conditions. Symptoms include pain, red eye, and often, decreased vision.  Optic neuritis. The nerve travelling from the back of the eyeball into the brain can become inflamed.
Oak root fungus, or white rot, is a widespread disease that becomes visible just beneath the bark and on roots. What looks like layers of light brown to tan mushrooms form in clusters at the base of the trees.
Root and Butt Rot Diseases-The diseases in this category infect and kill roots and cause decay of the roots and trunks of trees. These diseases can seriously impair the structural integrity of the trees they infect resulting in total tree failure often with little advanced notice.oadstools, puffballs, dwarf benches and mushrooms are just a few of the names given to describe some of the fungi that can be affecting the health of your trees. Formerly thought of as a group of simple plants lacking chlorophyll, fungi are now classified as a separate kingdom of living organisms.