Tulipifera. - Tulip Tree. - This is one of the largest of our American trees, exceeded only by the Buttonwood in magnitude. The flowers resemble the tulip in shape; they are produced in June and July, large, brilliant, very numerous, variegated with different colors, among which yellow predominates; they have an agreeable odor, and, surrounded by luxuriant foliage, they produce a fine effect. The leaves are large, divided into three lobes, of which the horizontal one is notched at the summit, and the two lower ones are rounded at the base.