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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.
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]
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Bead-tree, white cedar, Persian lilac (Melia azedarach) Maple (Acer) Hard maple Sugar maple (Acer saccharum) Black maple (Acer nigrum) Soft maple Boxelder (Acer negundo) Red maple (Acer rubrum) Silver maple (Acer saccharinum) European maple Sycamore maple (Acer pseudoplatanus) Marblewood (Marmaroxylon racemosum) Marri, red gum (Corymbia calophylla)
The whole database contains materials from over 10,000 woody species and 200 plant families. Initiator for this wood anatomy database has been the American botanist and wood scientist Elisabeth Wheeler. The database contains two distinctive menus for specific anatomical features of modern wood species: Softwoods [6] Hardwoods [7]
Hickory, persimmon (Diospyros virginiana), and pecan (C. illinoinensis) are most frequently infested, but other hardwoods also are attacked. Healthy trees growing in proximity to heavily infested trees are occasionally attacked but almost always without success. Hickory is one of several host species of the twig girdler (Oncideres cingulata ...
Enchylium conglomeratum is known to inhabit the bark of trees, making it a corticolous species. [27] It thrives in nutrient-rich sites within woodland and forest environments, frequently associating with hardwood trees such as walnut ( Juglans ), Quercus (oak), Platanus , Olea europaea (olive), and other broad-leaved trees .
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 ...