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Quercus infectoria is a small tree, growing to 1 to 2 metres (4 to 6 feet) in height. [citation needed] The stems are crooked, shrubby looking with smooth and bright-green leaves borne on short petioles of 3–4 centimetres (1 + 1 ⁄ 4 – 1 + 1 ⁄ 2 inches) long.
Quercus ilicifolia, commonly known as bear oak or scrub oak, is a small shrubby oak native to the Eastern United States and, less commonly, in southeastern Canada. Its range in the United States extends from Maine to North Carolina , with reports of a few populations north of the international frontier in Ontario . [ 3 ]
Quercus gambelii, with the common name Gambel oak, is a deciduous small tree or large shrub that is widespread in the foothills and lower mountains of western North America. It is also regionally called scrub oak , oak brush , and white oak .
The cooling effects of peppermint have been shown to help soothe some itchiness and rashes. For instance, a study found that peppermint oil with petrolatum eased itchiness in participants. The ...
In Korea, sawtooth oak bark is used to make shingles for traditional roof construction. [80] The dried bark of the white oak was used in traditional medical preparations; its tannic acid content made it astringent and antiseptic. [81] Acorns have been ground to make a flour, [82] and roasted for acorn coffee. [83]
The bark of the tree is an important herbal medicine in China. The oil has insecticidal properties similar to pyrethrum . [ 14 ] The oil contains a variety of biologically active substances, including flavonoids ( diosmin ), alkaloids ( berberine , jatrorrhizine , palmatine ), saponins , and coumarins .
Quercus variabilis, the Chinese cork oak, is a species of oak in the section Quercus sect. Cerris, native to a wide area of eastern Asia in southern, central, and eastern China, Taiwan, Japan, and Korea.
Quercus rubra, the northern red oak, is an oak tree in the red oak group (Quercus section Lobatae). It is a native of North America, in the eastern and central United States and southeast and south-central Canada.
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