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''Artemisia tripartita'' is a species of flowering plant in the aster family known by the common name threetip sagebrush.〔 It is native to western North America from British Columbia to Nevada and Montana to Colorado.〔(Biota of North America Program 2014 county distribution map )〕 It covers about 8.4 million acres (3.4 million hectares) of the Rocky Mountains and Great Basin.〔Tirmenstein, D. 1999. (''Artemisia tripartita'' ) In: Fire Effects Information System, (). U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.〕 This plant is an evergreen shrub up to 2 meters tall. The subspecies ''rupicola'' (Wyoming threetip sagebrush) is a dwarf subspecies with decumbent branches, spreading to about half a meter but growing only about 15 centimeters tall. The leaves are three-parted. The plant produces many seeds. It can also spread by sprouting from shallow roots and by layering.〔 The plant is aromatic.〔 This plant is common and can be dominant in some regions, including the steppe of Washington, the sagebrush of southern Idaho, and the grassland and shrubland in western Montana. It grows on steep slopes and rocky, shallow soils. It tolerates dry soils well.〔 ;Subspecies〔 * ''Artemisia tripartita'' subsp. ''rupicola'' Beetle - Wyoming, Colorado * ''Artemisia tripartita'' subsp. ''tripartita'' - British Columbia, Washington, Oregon, Idaho, Montana, Wyoming, Utah, Nevada ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Artemisia tripartita」の詳細全文を読む スポンサード リンク
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