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・ Quercus oglethorpensis
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・ Quercus patelliformis
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Quercus cornelius-mulleri
・ Quercus corrugata
・ Quercus costaricensis
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Quercus cornelius-mulleri : ウィキペディア英語版
Quercus cornelius-mulleri


''Quercus cornelius-mulleri'' is a North American species of oak known by the common name Muller oak, or Muller's oak. It was described to science in 1981 when it was segregated from the ''Quercus dumosa'' complex and found to warrant species status of its own.〔Nixon, K. C. and K. P. Steele. (1981). A new species of ''Quercus'' (Fagacaeae) from Southern California. ''Madroño'' 28 210.〕 It was named for the ecologist Cornelius Herman Muller. It is native to southern California and Baja California, where it grows in chaparral, oak woodlands, and other habitat in foothills and mountains. It can most easily be observed in Joshua Tree National Park and in the woodlands along the western margins of the Colorado Desert in San Diego County, California.〔Nixon, K. C. (2002). (The Oak Biodiversity of California and Adjacent Regions. ) US Forest Service Gen. Tech. Report〕〔(Calflora taxon report, University of California, ''Quercus cornelius-mulleri'' K. Nixon & K. Steele. Muller oak, desert scrub oak )〕〔
==Description==
''Quercus cornelius-mulleri'' is a bushy shrub not exceeding 3 meters (10 feet) in height. It is densely branched, its tangled twigs gray, brown, or yellowish, fuzzy when new and becoming scaly with age.〔
The evergreen leaves are leathery and thick. They are bicolored: white and quite woolly on the undersides and dull gray- or yellow-green and faintly hairy on the upper surfaces. The wool on the undersides of the leaves is made up of star-shaped leaf hairs that are fused into microscopic plates.〔 The leaf blades are oval with smooth or toothed edges, and measure 2.5 to 3.5 centimeters (1.0-1.4 inches) in length.〔(Flora of North America, ''Quercus cornelius-mulleri'' )〕
The fruit is an acorn with a cap up to 2 centimeters (0.8 inches) wide covered in light-colored scales and a cylindrical, round-ended nut up to 3 centimeters (1.2 inches) long.〔

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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