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Quercus alba, the white oak, is one of the preeminent hardwoods of eastern and central North America. It is a long-lived oak, native to eastern and central North America and found from Minnesota, Ontario, Quebec, and southern Maine south as far as northern Florida and eastern Texas. [3]
The bark of some trees, notably oak (Quercus robur) is a source of tannic acid, which is used in tanning. Bark chips generated as a by-product of lumber production are often used in bark mulch. Bark is important to the horticultural industry since in shredded form it is used for plants that do not thrive in ordinary soil, such as epiphytes. [50]
Quercus myrsinifolia is an evergreen oak tree that grows up to 20 metres (66 ft) tall. Leaves are 60–110 × 18–40 mm with serrulate margins; the petiole is 10–25 mm long. The acorns are ovoid to ellipsoid, 14–25 × 10–15 mm, and glabrous with a rounded apex; the flat scar is approx. 6 mm in diameter.
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 leaves are obovate to oblong, glabrous above, glabrous to densely grey-white hairy below, mostly 10–20 centimetres (4–8 inches) long and 5–14 cm (2– 5 + 1 ⁄ 2 in) wide (rarely up to 30 cm (12 in) long and 16 cm (6 in) wide), with 9 to 15 lobes on each side, and a 10–13 mm (3 ⁄ 8 – 1 ⁄ 2 in) petiole. The flowers monecious ...
Mountains of southern Arizona and New Mexico such as the Santa Catalina Mountains and the Chiricahua Mountains, for example, have a pine-oak woodland at an elevation of roughly 1,710–2,160 m (5,700 to 7,200 ft). Here, Q. hypoleucoides can be found as well as other species of oak trees such as the Q. arizonica, Q. emoryi, and Q. rugosa. [11]
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The term tannin (from Anglo-Norman tanner, from Medieval Latin tannare, from tannum, "oak bark") refers to the use of oak and other bark in tanning animal hides into leather. By extension, the term tannin is widely applied to any large polyphenolic compound containing sufficient hydroxyls and other suitable groups (such as carboxyls ) to form ...
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