Ulmus americana - American Elm
Three distinct habits are recognized including the vase-shaped form in which the trunk divides into several erect limbs strongly arched above and terminating in numerous slender, pendulous branchlets. A more wide-spreading and less arching form occurs, as well as a narrow form with branchlets clothing the entire trunk. The species usually grows 60-80 ft. Dark-green leaves have variable fall color. Large, handsome, graceful tree, often with enlarged buttresses at base, usually forked into many spreading branches, drooping at ends, forming a very broad, rounded, flat-topped or vaselike crown, often wider than high.This well-known, once abundant species, familiar on lawns and city streets, has been ravaged by the Dutch Elm disease, caused by a fungus introduced accidentally about 1930 and spread by European and native elm bark beetles.