Читать книгу Studies of Trees - Jacob Joshua Levison - Страница 27

Fig. 28.—Terminal Twig of Silver Maple.

Distinguishing characters: The bark is smooth and light gray, like that of the beech, on the upper branches in older trees, and in young trees over the whole trunk. Fig. 30. The buds are in clusters, and the terminal twigs, Fig. 31, are quite red.

Fig. 29.—Leaf of the Silver Maple.

Leaf: Whitish underneath with three-pointed lobes. Fig. 32.

Form and size: A medium-sized tree with a narrow, round head.

Range: Eastern North America.

Soil and location: Prefers moist places.

Enemies: Leaf blotches (Rhytisma acerinum) which, however, are not very injurious.

Value for planting: Suitable as a shade tree for suburban streets. Its rich red leaves in the fall make it attractive for the lawn.

Fig. 30.—Bark of the Red Maple.

Commercial value: Its wood is heavy, close-grained, and takes a good polish. Used for furniture and fuel.

Other characters: The bud is small, round, and red. The flowers appear before the leaves are out in the early part of April.

Fig. 31.—Twig of the Red Maple.

Fig. 32.—Leaf of the Red Maple.

Other common names: The red maple is sometimes known as swamp maple.

Fig. 33.—Twig of Norway Maple.

Comparisons: The red maple is apt to be confused with the silver maple, but the latter can be distinguished by its turned-up twigs and scaly bark over the whole trunk of the tree, which presents a sharp contrast to the straight twig and smooth bark of the red maple. The latter has a bark similar to the beech, but its branches are opposite, while those of the beech are alternate.