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Quercus kelloggii
''Quercus kelloggii'', the California black oak, also known as simply black oak, or Kellogg oak, is an oak in the red oak section (''Quercus'' sect. ''Lobatae''), native to western North America. It is a close relative of the black oak (''Quercus velutina'') found in eastern and central North America.
==Distribution and habitat==
California black oak is a deciduous tree growing in mixed evergreen forests, oak woodlands, and Coniferous forests. California black oak is distributed along foothills and lower mountains of California and western Oregon.〔(Biota of North America Program 2014 county distribution map )〕〔(Calflora taxon report, University of California, Quercus kelloggii Newb. Black oak, California black oak )〕
It is found from Lane County, Oregon, south through the Cascade Range, the Sierra Nevada, and the Coast, Transverse, and Peninsular ranges to San Diego County, California and into Baja California. The tree occurs in pure or mixed stands. Pure stands usually indicate sites unfavorable to conifer growth or recurring disturbance such as fire or logging activities. The tree can grow in many types of soils, but it is important that the soil be well-drained.〔〔〔
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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