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・ Quercus hypoxantha
・ Quercus iberica
・ Quercus ilex
・ Quercus ilicifolia
・ Quercus iltisii
・ Quercus imbricaria
・ Quercus incana
・ Quercus infectoria
・ Quercus inopina
・ Quercus insignis
・ Quercus intricata
・ Quercus invaginata
・ Quercus ithaburensis
・ Quercus jenseniana
・ Quercus jinpinensis
Quercus john-tuckeri
・ Quercus kelloggii
・ Quercus kerrii
・ Quercus kiukiangensis
・ Quercus kouangsiensis
・ Quercus laceyi
・ Quercus laeta
・ Quercus laevis
・ Quercus lamellosa
・ Quercus lanata
・ Quercus laurifolia
・ Quercus laurina
・ Quercus leucotrichophora
・ Quercus libani
・ Quercus liebmannii


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Quercus john-tuckeri : ウィキペディア英語版
Quercus john-tuckeri

''Quercus john-tuckeri'' is a North American species of oak known by the common name Tucker oak, or Tucker's oak.〔Nixon, K. C. and C. H. Muller. (1994). New names in California oaks. Novon 4:4 391-93.〕 It is endemic to California, where it grows in the chaparral and oak woodlands of mountain slopes in the western Transverse Ranges, the southernmost Central Coast Ranges, and the margins of the Mojave Desert.〔(Calflora taxon report, University of California, ''Quercus john-tuckeri'' K. Nixon & C.H. Muller, Tucker oak, Tucker's oak )〕 The species is named after John M. Tucker, professor of botany (1947-1986) at the University of California at Davis, specialist in ''Quercus.'' 〔
==Description==
''Quercus john-tuckeri'' is a bushy shrub growing up to 2 to 5 meters (80-200 inches or 6.7-16.7 feet) in height, sometimes becoming treelike, exceeding six meters (20 feet). The branches are gray or brown, the twigs coated in short woolly fibers when new and becoming scaly with age. The evergreen leaves are leathery and thick, sometimes brittle. They are gray-green, the lower surface slightly paler. The undersides are hairy, the upper surfaces somewhat less so. The leaf blade is roughly oval, spine-toothed, and less than 4 centimeters (1.6 inches)long. The fruit is an acorn with a thin cap 1 to 1.5 centimeters (0.4-0.6 inch) wide and a nut 2 to 3 centimeters (0.8-1.2 inches) long.〔(Flora of North America, ''Quercus john-tuckeri'' Nixon & C. H. Muller, 1994. Tucker oak, desert scrub 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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