Mostly Lichens are the fungus found on the oak trees. These fungus are normally blue or blue gren in color. Lichens are of three kinds : Crustose, Fruticose and Foliose. These are the result of high humidity.
Oak wilt is a fungal disease which can quickly kill an oak treeOak wilt affects all oak species, but has somewhat different effects on different groups fungus infected in summer
the fungus that found on the oak tree trunk is a green algae which is sponge to touch. this algae will spread throughout the oak tree and this tends to cut the tree some time. but the tree looks very greenish...
