The flowers appear in the spring before the leaves, in dense clusters, and are of a greenish-yellow color. The fruit ripens in late spring. It consists of a pair of winged seeds or “keys” with wings 1 to 2 inches long on slender, flexible, threadlike stems about an inch long.
The wood is soft, weak, even-textured, rather brittle, easily worked, and decays readily when exposed. It is considerably used for boxboards, furniture, veneers and fuel.
The red maple, or swamp maple, Acer rubrum L., has leaves deeply lobed with the lobes sharply toothed. The autumn color is deep red. The flowers also are red and the fruit is small reddish, maturing late in spring.
BOX ELDER Acer negundo L.
THE box elder is a fairly rapidly growing tree, found commonly along streams rather generally over the State. It is a tree of medium size, rarely reaching over 24 inches in diameter and 60 to 70 feet in height. It has been considerably planted for shade because in good soil its growth is rapid. Its limbs and branches, however, are fragile, and the tree as a whole is rather subject to disease. It is not long-lived or generally satisfactory for any purpose. It is prolific in reproduction but is largely destroyed by grazing and cultivation.
BOX ELDER
Twig, two-thirds natural size. Leaf, one-third natural size.