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Quercus graciliformis : ウィキペディア英語版 | Quercus graciliformis
''Quercus graciliformis'' (also called Chisos oak or slender oak) is a rare North American species of trees in the beech family. It has been found only in the Chisos Mountains in western Texas and a few miles southeast in the State of Coahuila in Mexico.〔(Texas A&M University )〕 It is threatened by habitat loss.〔Nixon, K. ''et al.'' 1998. (''Quercus graciliformis'' ). (2006 IUCN Red List of Threatened Species. ) Downloaded on 23 August 2007.〕〔(Biota of North America Program 2014 county distribution map )〕 ''Quercus graciliformis'' is a deciduous tree up to 8 meters (27 feet) tall. Leaves are elliptical or lance-shaped with 8-10 shallow lobes. It grows on dry, rocky canyon floors at elevations above 5,000 feet (1500 meters).〔(Flora of North America, ''Quercus graciliformis'' 1934. Chisos oak )〕 ==References==
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