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Native ash species, including white ash (pictured), have been declining rapidly this century due to predation by the emerald ash borer. [1]Silvics of North America (1991), [2] [3] a forest inventory compiled and published by the United States Forest Service, includes many hardwood trees.
An oak is a hardwood tree or shrub in the genus Quercus of the beech family. They have spirally arranged leaves, often with lobed edges, and a nut called an acorn, borne within a cup. The genus is widely distributed in the Northern Hemisphere; it includes some 500 species, both deciduous and evergreen.
Hardwood from deciduous species, such as oak, normally shows annual growth rings, but these may be absent in some tropical hardwoods. [3] Hardwoods have a more complex structure than softwoods and are often much slower growing as a result. The dominant feature separating "hardwoods" from softwoods is the presence of pores, or vessels. [4]
The top of each leaf is a dull green to bluish green and the bottom is a paler bluish-green. On the bottom portion of the leaves, rusty colored hairs run along the veins. The acorns are arranged singly or in pairs, 10–14 millimeters ( 3 ⁄ 8 – 1 ⁄ 2 in) long and broad, with a shallow cupule; they mature about 18 months after pollination ...
A broad-leaved, broad-leaf, or broadleaf tree is any tree within the diverse botanical group of angiosperms that has flat leaves and produces seeds inside of fruits. It is one of two general types of trees, the other being a conifer , a tree with needle-like or scale-like leaves and seeds borne in woody cones. [ 1 ]
American Hardwood Export Council; Australian National Association of Forest Industries; Canadian Wood Group; FSC Lesser Known Timber Species; NCSU Inside Wood project;
It is a moderately long-lived [4] hardwood [4] with a light-colored wood, yellowish gray to light brown with yellow streaks. [5] The common hackberry is easily distinguished from elms and some other hackberries by its cork-like bark with wart-like protuberances. The leaves are distinctly asymmetrical and coarse-textured.
The common English name hornbeam derives from the hardness of the woods (likened to horn) and the Old English beam, "tree" (cognate with Dutch Boom and German Baum).. The American hornbeam is also occasionally known as blue-beech, ironwood, or musclewood, the first from the resemblance of the bark to that of the American beech Fagus grandifolia, the other two from the hardness of the wood and ...