Читать книгу Studies of Trees - Jacob Joshua Levison - Страница 25

Distinguishing characters: The bud is sharp-pointed, scaly, and reddish brown. Fig. 24.

Fig. 24.—Twig of the Sugar Maple.

Leaf: Has sharp points and round sinus. Fig. 25.

Form and size: The crown is oval when the tree is young and round in old age. Fig. 26.

Range: Eastern United States.

Soil and location: Moist and deep soil, and cool, shady positions.

Enemies: Subject to drouth, especially in cities. Is attacked by the sugar maple borer and the maple phenacoccus, a sucking insect.

Value for planting: Its rich and yellow color in the fall, and the fine spread of its crown make it a desirable tree for the lawn, especially in the country.

Commercial value: Its wood is hard and takes a good polish; used for interior finish and furniture. The tree is also the source of maple sugar. Fig. 27.

Other characters: The bark is smooth in young trees and in old trees it shags in large plates. The flowers appear in the early part of April.

Other common names: The sugar maple is sometimes called rock maple or hard maple.