Also known as 'Citrine'. A deciduous shrub of the Caprifoliaceae family. It grows in the mountains and fields of Hokkaido, Honshu, and Shikoku, and is commonly found on the Japan Sea coast. The leaves are opposite, oblong, and hairy. In May, flower stalks emerge from the leaf axils, and usually two flowers appear at the end. The corolla is tubular with five lobes at the end, white at first but yellow later. There are five long stamens. The fruits are spherical, borne in pairs, and ripen red in July to August. Poisonous. Used as a garden tree and bonsai. The closely related 'Oohyotanboku' grows in the lower alpine zone of central Honshu, with ovate, oblong, hairless leaves and whitish undersides. Yellowish-white flowers bloom in July. The fruits are lined up in pairs and ripen red in September. Source : Heibonsha Encyclopedia About MyPedia Information |
キンギンボクとも。スイカズラ科の落葉低木。北海道,本州,四国の山野にはえ,日本海側によくみられる。葉は対生し,長楕円形で毛がある。5月,葉腋から花柄を出し,先端にふつう2個の花をつける。花冠は筒形で先は5裂,はじめ白色でのちに黄色になる。おしべは5本で長い。果実は球形で2個ずつ接してつき,7〜8月赤熟。有毒。庭木,盆栽などとする。近縁のオオヒョウタンボクは本州中部の高山帯下部にはえ,葉は卵状長楕円形,毛はなく,裏面は白っぽい。7月,黄白色の花を開く。果実は2個並び9月赤熟。
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