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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.
Quercus velutina (Latin 'velutina', "velvety") , the black oak, is a species of oak in the red oak group (Quercus sect. Lobatae), native and widespread in eastern and central North America. It is sometimes called the eastern black oak. [4] Quercus velutina was previously known as yellow oak due to the yellow pigment in its inner bark.
Quercus georgiana leaves Brown winter leaves on Georgia oak. The shiny green leaves are 4–13 centimeters (1 + 1 ⁄ 2 –5 inches) long and 2–9 cm (1– 3 + 1 ⁄ 2 in) wide, with a 0.6–2.3 cm (1 ⁄ 4 –1 in) petiole, and five irregular, pointed, bristle-tipped lobes; they are glabrous (hairless), except for small but conspicuous tufts of hairs in the vein axils on the underside.
The white oak is the only known food plant of the Bucculatrix luteella and Bucculatrix ochrisuffusa caterpillars. The young shoots of many eastern oak species are readily eaten by deer. [21] Dried oak leaves are also occasionally eaten by white-tailed deer in the fall or winter. [22] Rabbits often browse twigs and can girdle stems. [21]
Quercus chrysolepis, commonly termed canyon live oak, canyon oak, golden cup oak or maul oak, is a North American species of evergreen oak.Its leaves are a glossy dark green on the upper surface with prominent spines; a further identification arises from the leaves of canyon live oak being geometrically flat.
Quercus stellata, the post oak or iron oak, is a North American species of oak in the white oak section. It is a slow-growing oak that lives in dry areas on the edges of fields, tops of ridges, and also grows in poor soils, and is resistant to rot, fire, and drought. Interbreeding occurs among white oaks, thus many hybrid species combinations ...
Species in section Ilex are native to Eurasia and northern Africa. [2] Styles medium-long; acorns mature in 12–24 months, appearing hairy on the inside. Evergreen leaves, with bristle-like extensions on the teeth. (Sister group to sect. Cerris and sometimes included in it.) [citation needed]
Quercus nigra, the water oak, is an oak in the red oak group (Quercus sect. Lobatae), native to the eastern and south-central United States, found in all the coastal states from New Jersey to Texas, and inland as far as Oklahoma, Kentucky, and southern Missouri. [3]