An evergreen small tree of the Malvaceae family (illustration) commonly found on tropical coasts. Its branches grow thick and can reach a height of over 10m. The leaves have long petioles with early-falling stipules at the base, and the blades are leathery, ovate, and cordate at the base, resembling poplar leaves. Yellow, five-petaled flowers about 5-8cm in diameter grow from the axils. The base of the flower is purple-red, but when it closes in the evening, the entire flower takes on that color. In tropical regions, it blooms all year round. The fruits are slightly flattened and spherical, measuring 2-3cm in diameter, and contain hairy seeds that do not lose their viability even when immersed in seawater. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
熱帯域の海岸に広く見られるアオイ科の常緑小高木(イラスト)。枝はよく茂り,10m余りの高さになる。葉は基部に早落性の托葉のある長い葉柄を有し,葉身は革質,円卵形で基部は心形となり,ポプラの葉に似ている。葉腋(ようえき)から径5~8cmほどの黄色5弁の花を出す。花の底部は紫紅色をしているが,夕刻閉花するときになると全体がその色に染まる。熱帯域では周年開花する。果実はやや扁平となった球形で,径2~3cm,有毛の種子を有し,海水に浸っても種子の発芽力はなくならない。
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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