The elm is an ancient, big and widely common tree. It is quite easy to recognize from the shape of its leaves: they are oval, but their lobes are asymmetrical, with one site shorter than the other; and they are slightly rough at the touch.
A common cousin of the elm, Celtis australis, is found frequently in town gardens and parks. This tree has a grey, smooth trunk, a fine gait, and its long oval leaves are dark green.
