This tree is identified by its alternately compounded, 8-12 inch leaves. There may be 7-11 leaflets per leaf that are elliptical to ovate and 3-4 inches long each. The flowers are out in May. These flowers have been called the most beautiful tree flowers in the American Forests. I hope to photograph the flowers one day soon. The flowers do not appear every year; just every 2-5 years.