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Quercus acerifolia
''Quercus acerifolia'' (also called maple-leaved oak) is a rare North American species of trees in the beech family. It is endemic to the Ozark Mountains of the State of Arkansas in the south-central United States.〔C.Michael Hogan. 2012. (''Oak''. Encyclopedia of Earth. Eds. A.Dawson and C.J.Cleveland. Encyclopedia of Earth. National Council for Science and the Environment. Washington DC )〕〔(Biota of North America Program 2014 county distribution map )〕
The epithet ''acerifolia'' means "maple-leaved." The venation of the leaves shows them to be technically pinnately 5-lobed but with the two middle lobes larger than the other three. This makes the leaves appear palmately lobed at first glance, similar to many maples leaves. ''Quercus acerifolia'' is a tree sometimes reaching a height of 15 meters (50 feet).〔(Flora of North America, ''Quercus acerifolia'' (E. J. Palmer) Stoynoff & W. J. Hess, 1990. Maple-leaf oak )〕〔(Stoynoff, Nick Hess, William John 1990. Sida 14(2): 267-271 ) includes line drawings comparing ''Quercus acerifolia'' and ''Quercus shumardii''〕
The species is threatened by habitat loss.〔W.J.Hess. 1998. (''Quercus acerifolia'' ). (2006 IUCN Red List of Threatened Species. ) Downloaded on 23 August 2007.〕
==References==
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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