Turkey Tail (Trametes versicolor) is the most common polypore, and one of the most common mushrooms, in North American woodlands. It is found on logs and stumps of dead hardwood trees, especially oaks. It is sometimes also found on wounds of live trees. It is rarely found on conifers. It appears in the spring and persists through the summer or fall. The fan shape and concentric rings of contrasting colors look like a turkey tail, giving this mushroom its common name.