An evergreen tree of the family Carpinaceae rarely found in the coastal waters of the Ryukyu Islands, reaching a height of 10 m and a diameter of 20 cm. Young branches have thick thorns. The leathery leaves are alternate, have short petioles, are ovate or lanceolate, have three midribs, are 3-10 cm long, are pointed at both ends, and have blunt sawtooth edges, but in older trees they are completely gone, have a glossy surface, and the midrib and veinlets protrude on both sides. The flowers are bisexual, borne in axillary racemes, about 6 mm in diameter. The sepals and petals are pale yellow, with 5-6 in number. There are many stamens. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
琉球諸島の近海地にまれに見られるイイギリ科の常緑小高木で,高さ10m,直径20cmに達する。若枝に太いとげがある。革質の葉は互生し,短い葉柄を有し,卵形または披針形,3主脈があり,長さ3~10cm,両端はとがり,ふちには鈍鋸歯があるが老木では全くなくなり,表面に光沢があり,中肋と細脈は両面に突出する。花は両性,腋生(えきせい)の総状花序につき,径6mmくらい。萼片と花弁は5~6枚で淡黄色。おしべは多数。
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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