An evergreen shrub (illustration) of the Araliaceae family. It branches sparsely and is widely planted as a garden tree or potted plant, growing well in the shade or in places with severe air pollution. It grows to a height of 2-3m, with long, alternate leaves at the end of the trunk, palmately divided into 7-9 lobes, thick, smooth, and dark green in colour. In November, the spherical umbels gather together to form a large (20-40cm long) panicle. The ovary is inferior, with 5 petals and stamens, and 5 stigmas. The 5-lobed fruit matures to a purple-black colour in April-May of the following year, and each fruit contains 5 seeds. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
ウコギ科の株立ちになる常緑低木(イラスト)。まばらに枝を出し,庭木や鉢植えに広く植栽され,日陰や大気汚染の激しいところでもよく育つ。高さ2~3mになり,葉は幹の先に束生状に互生して長柄があり,葉身は掌状に7~9裂して,厚く滑沢があり,濃緑色。11月に球状になった散形花序が集まり,大きな(長さ20~40cm)円錐花序をつくる。花弁とおしべは5個,柱頭も5本で,子房下位。5室からなる果実は翌年の4~5月に紫黒色に成熟し,1果に種子を5個入れる。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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