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Quercus palustris, also called pin oak, [4] swamp oak, or Spanish oak, [5] is a tree in the red oak section (Quercus sect. Lobatae) of the genus Quercus. Pin oak is one of the most commonly used landscaping oaks in its native range due to its ease of transplant, relatively fast growth, and pollution tolerance.
– Chinkapin oak – eastern, central, and southwestern US (West Texas and New Mexico), northern Mexico; Quercus ningqiangensis S.Z.Qu & W.H.Zhang – southeastern China; Quercus oblongifolia Torr. – Arizona blue oak, Southwestern blue oak, or Mexican blue oak – # southwestern U.S., northwestern Mexico; Quercus obtusata Bonpl. – Mexico
Oak wood chips are used for smoking foods such as fish, meat, and cheese. [87] [88] In Japan, Children's Day is celebrated with Kashiwa-mochi rice cakes, filled with a sweet red bean paste, and wrapped in a kashiwa oak leaf. [89] The bark of the cork oak is used to produce cork stoppers for wine bottles.
The acorns tend to be ellipsoid (ellipse-shaped, from which its scientific name derives), though they tend to be highly variable and range to globose, 6–11 millimeters (1 ⁄ 4 – 7 ⁄ 16 in) long and 10–19 mm (13 ⁄ 32 – 3 ⁄ 4 in) broad, a third to a half covered in a deep cup, green maturing pale brown about 18 months after ...
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It can be mistaken for the pin oak, the black oak (Q. velutina), or occasionally the red oak (Q. rubra). On the scarlet oak the sinuses between lobes are C-shaped in comparison to pin oak, which has U-shaped sinuses and the acorns are half covered by a deep cap. [8] Additionally, pin oak foliage generally turns bronze in autumn.
It is fast-growing and usually has a pleasing red color in autumn, much more reliably so than the pin oak. This species was for years erroneously called Quercus nuttallii, but it is now known as Q. texana; this has created much confusion with Texas red oak, which was known as Q. texana but is now known as Q. buckleyi. [8]
However, unlike the pointed teeth on the leaves of the chinquapin oak, chestnut oak leaves generally have rounded teeth. The two species have contrasting kinds of bark: chinquapin oak has a gray, flaky bark very similar to that of white oak ( Q. alba ) but with a more yellow-brown cast to it (hence the occasional name yellow oak for this ...