Complete the worksheet! Family: Elm (Ulmaceae) Height: 70-100' Tree: one of the tallest trees, single trunk, prominent root flares, upper limbs fan out gracefully, forming an upright vase shape, branch tips often drooping Leaf: simple, oval, 3-6" length, alternately attached, with pointed tip, asymmetrical leaf base, double-toothed margin, slightly rough to touch, only 2-3 forked veins per leaf Bark: dark gray, deeply furrowed with flat ridges, corky, sometimes scaly Flower: tiny reddish-brown flower, ¼" diameter, in clusters, 1" wide Fruit: flat, fuzzy green disk (samara), turning tan when mature, round to oval, ½" diameter, with a notch opposite the fruit stalk Fall Color: yellow Origin/Age: native; 150-200 years Habitat: moist soils, full sun Range: throughout Interesting Facts: Also called White Elm, this once dominant tree lined just about every city street in eastern North America. Nearly eliminated due to Dutch elm disease, which is caused by a fungus that attacks the tree's vascular system. The fungus was introduced to the U.S. in the 1920s by infected elm logs from Europe. Its arching branches form a canopy, providing shade. The distinct vase shape of the mature tree makes it easy to recognize from a distance. Several Dutch elm disease-resistant trees are now sold at nurseries. Explore the tree species of Central Park!