Caroline ivory nut palm

Japanese: オオボタンヤシ（英語表記）Caroline ivory nut palm

A tall palm tree native to Micronesia, usually growing near water in valleys. The trunk reaches a height of 20 m and a diameter of 60-90 cm, and the surface is rough, with the base of the petiole remaining. The leaves are pinnately lobed and about 3 m long. The pinnae are numerous, lanceolate, about 45 cm long, and pendulous. The base of the leaf sheath is coarse, with irregular linear projections on the outer surface like those seen in sago palms, and a few long thorns. The spadix emerges from the leaf axil and is 2-3 m long. The flowers are monoecious. The fruit is spherical, 5-9 cm in diameter, and the outer surface is covered with small shiny scales.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:

ミクロネシアに自生するヤシ科の高木で，通常谷間の水辺に生える。幹は高さ20m，直径60～90cmに達し，表面は葉柄の基部を残存し，粗い。葉は羽状全裂で長さ約3m。羽片は多数で披針形，長さ約45cmで下垂性。葉鞘（ようしよう）基部は粗大で外面にサゴヤシに見るような不規則の線状の突起があり，少数の長いとげを有する。肉穂花序は葉腋（ようえき）より抽出し，長さ2～3m。花は雌雄同株。果実は球形，径5～9cm，外面は小さい光沢のある鱗片で包まれている。

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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