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Quercus michauxii
''Quercus michauxii'', the swamp chestnut oak, is a species of oak in the white oak section ''Quercus'' section ''Quercus'' in the beech family. It is native to bottomlands and wetlands in the eastern and central United States, in coastal states from New Jersey to Texas, inland primarily in the Mississippi/Ohio Valley as far as Oklahoma, Missouri, Illinois, and Indiana.〔(Biota of North America Program 2014 county distribution map )〕
==Classification and nomenclature==
The swamp chestnut oak closely resembles the chestnut oak ''Quercus prinus'', and for that reason has sometimes been treated as a variety of that species. However, the swamp chestnut oak is a larger tree which differs in preferred habitat, and the bark does not have the distinctive deep, rugged ridging of the chestnut oak, being thinner, scaly, and paler gray. It typically grows to around 65 feet (20 meters) tall, though the tallest specimen currently known is over 150 feet (42 meters) tall.
The name ''Q. prinus'' was long used by many botanists and foresters for the swamp chestnut oak, even when treated as a species distinct from the chestnut oak, which was then called ''Q. montana'', but the application of the name ''Q. prinus'' to the chestnut oak is now often accepted,〔The confusion arose from differing identifications of the type specimens for the Linnaean name, by some (but not all) botanists considered resolved by close examination of the leaf pubescence, which differs in the two species.〕 although sometimes that name is declared to be of uncertain position, unassignable to either species, with the chestnut oak then called ''Q. montana'', as in the ''Flora of North America''〔(Flora of North America, ''Quercus montana'' Willdenow, 1805. Mountain chestnut oak, rock chestnut oak )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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