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''Phacelia hastata'' is a species of flowering plant in the borage family, Boraginaceae. Its common names include silverleaf scorpionweed,〔(''Phacelia hastata''. ) NatureServe. 2012.〕 silverleaf phacelia,〔(''Phacelia hastata''. ) USDA PLANTS.〕 and white-leaf phacelia.〔(''Phacelia hastata''. ) Burke Museum. University of Washington.〕 It is native to western North America from British Columbia and Alberta south to California and east to Nebraska.〔 It can be found in many types of habitat, including scrub, woodland, and forest, up to an elevation of 13,000 feet.〔(''Phacelia hastata''. ) Calflora.〕 ==Description== ''Phacelia hastata'' is a variable perennial herb with a stem 5 to 50 centimeters long.〔(''Phacelia hastata''. ) The Jepson Manual.〕 It is coated in a fine, silvery pubescence.〔 The deeply veined leaves are lance-shaped to oval, and smooth-edged, lobed, or divided into leaflets.〔 Most of the leaves are in a tuft around the base of the plant.〔 The flower has an urn- or bell-shaped white or lavender corolla about 4 to 7 millimeters long. The stamens protrude. The fruit is a hairy capsule a few millimeters in length.〔 There are up to four accepted varieties:〔〔(''Phacelia hastata''. ) Integrated Taxonomic Information System (ITIS).〕 *''P. hastata'' var. ''charlestonensis'' – Charleston phacelia, Spring Mountains phacelia; endemic to Nevada〔(''Phacelia hastata'' var. ''charlestonensis''. ) Nevada Natural Heritage Program. State of Nevada.〕 *''P. hastata'' var. ''compacta'' – compact phacelia, timberline phacelia; a matlike form occurring at elevation〔(var. ''compacta''. ) The Jepson Manual.〕 *''P. hastata'' var. ''dasyphylla'' – spearshaped phacelia; limited to California and Oregon〔(var. ''dasyphylla''. ) NatureServe. 2012.〕 *''P. hastata'' var. ''hastata'' – silverleaf phacelia; rangewide〔(var. ''hastata''. ) The Jepson Manual.〕 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「Phacelia hastata」の詳細全文を読む スポンサード リンク
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