Ulmus americana (American elm): Leaves
The elliptic leaves are firm, dark green, smooth (sometimes rough) above and paler and usually hairy below. They are simple, alternate and 3 to 6 inches long, with coarsely, doulbly-serrate margins and conspicuously unequal leaf bases. The principal veins, as is typical of elms, run straight to the teeth. Fall color is bright yellow and color intensity varies from year to year.