It is a deciduous medium-to-large tree of the Euphorbiaceae family, growing to a height of 10 m and a diameter of 35 cm. The bark is gray-brown with reddish-brown lenticels. The leaves are alternate, with reddish-brown petioles 2-6 cm long and leaf blades 4-8 cm long, 3-6 cm wide, diamond-shaped ovate with a tail-like tip, entire, glabrous, and slightly leathery. There are two glandular dots at the top of the petiole. The flowers are small yellow flowers that grow in racemes at the ends of the branches in June and July, with male flowers at the top and several female flowers at the base. The fruit is an oblate capsule about 1.5 cm in diameter with three lobes that dehisce and release three seeds when ripe around November. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
トウダイグサ科の落葉中高木で,高さ10m,直径35cmになる。樹皮は灰褐色で赤褐色の皮目がある。葉は互生し,葉柄は2~6cmで帯赤色,葉身は長さ4~8cm,幅3~6cmのひし状卵形で先が尾状に伸び,全縁,無毛,やや革質。葉柄頂部に2腺点がある。花は黄色の小花で,6~7月,枝端に生じた総状花序につき,花序の上部は雄花からなり,基部に数個の雌花がある。果実は径約1.5cmの扁球形の蒴果(さくか)で3室あり,11月ころ熟すと裂開して3個の種子を出す。
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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