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''Rubus leucodermis'', called white bark raspberry 〔(【引用サイトリンク】title=Jepson Flora Project: ''Rubus leucodermis'' )〕〔〔(【引用サイトリンク】title=NCRS: USDA Plants Profile: ''Rubus leucodermis'' )〕 is a species of ''Rubus'' native to western North America, from Alaska south as far as California, Arizona, New Mexico, and Chihuahua.〔(Biota of North America Program 2014 county distribution map )〕〔(Calflora taxon report, University of California, ''Rubus leucodermis'' Torrey & A. Gray, White Stemmed Raspberry, western raspberry, white bark raspberry )〕〔(Flora of North America ''Rubus leucodermis'' Douglas ex Torrey & A. Gray, 1840. )〕〔(SEINet, Southwestern Biodiversity, Arizona chapter ) photos, description, partial distribution map〕 ''Rubus leucodermis'' is closely related to the eastern black raspberry ''Rubus occidentalis''. The name ''leucodermis'' means "white skin," referring to the white appearance of the stems because of a thick waxy coating on the surface.〔 ''Rubus leucodermis'' is a deciduous shrub growing to 0.5–3 m tall, with prickly shoots. While the crown is perennial, the canes are biennial, growing vegetatively one year, flowering and fruiting the second, and then dying. As with other dark raspberries, the tips of the first-year canes (primocanes) often grow downward to the soil in the fall, and take root and form tip layers which become new plants. The leaves are pinnate, with five leaflets on leaves' strong-growing stems in their first year, and three leaflets on leaves on flowering branchlets with white and infrequently light purple flowers. The fruit is 1–1.2 cm diameter, red to reddish-purple at first, turning dark purple to nearly black when ripe. The fruit has high contents of anthocyanins and ellagic acid.〔〔〔 The fruit is the basis of Blue raspberry flavor, a popular flavor for candy, syrups and other sweets. It is a variable species, and forms natural hybrids with other species in subgenus ''Idaeobatus''. Three varieties are recognized:〔 *''Rubus leucodermis'' var. ''leucodermis'' - Alaska to Chihuahua *''Rubus leucodermis'' var. ''bernardinus'' Jepson - southern California *''Rubus leucodermis'' var. ''trinitatis'' Berger - southern California ==See also== *''Rubus occidentalis'', the commercial black raspberry *''Rubus niveus'' and ''Rubus coreanus'', related Asian species 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「Rubus leucodermis」の詳細全文を読む スポンサード リンク
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