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.
Black Fungus on Holly Bushes Sooty mold infection, which produces black, soot-like spots on your plantsâ foliage, comes from honeydew â and not the good kind of honeydew. This type of âhoneydewâ refers to a sticky syrup excreted by the terminal opening in a bugâs gut when it eats too much of your plantsâ sap. Basically, it eats until it pops.