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Rhaphiolepis umbellata : ウィキペディア英語版 | Rhaphiolepis umbellata
''Rhaphiolepis umbellata'' is a species of flowering plant in the Rosaceae family, native to Korea and Japan. Growing to tall and wide, it is an evergreen shrub with glossy oval leaves, and scented white flowers, sometimes tinged with pink, in early summer. This plant has gained the Royal Horticultural Society's Award of Garden Merit.〔(【引用サイトリンク】url=http://apps.rhs.org.uk/plantselector/plant?plantid=1598 )〕 It is used in Japan as an astringent and a dyeing agent. The bark contains (−)-catechin 7-O-β-d-glucopyranoside and (+)-catechin 5-0-β-d-glucopyranoside.〔Flavanol glucosides from rhubarb and Rhaphiolepis umbellata. Gen-Ichiro Nonaka, Emiko Ezakia, Katsuya Hayashia and Itsuo Nishioka, Phytochemistry, Volume 22, Issue 7, 1983, Pages 1659–1661, 〕 == References ==
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