A perennial plant of the family Celastraceae that grows in shallow tropical ponds and marshes (illustration). Runners emerge from the base of the plant. The leaves are basal, have petioles, and stand at an angle above the water surface. The petioles are 20-60 cm long and triangular in cross section. The leaf blades are broadly elliptical, 10-20 cm long and 6-15 cm wide, with pointed tips. In the tropics, the plant blooms all year round. The flower stalks are 20-80 cm long and triangular in cross section, and bear umbel-shaped cymes of about 10 flowers at the end. There are several ovate bracts at the base of the inflorescence. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
熱帯の浅い池や沼にはえるハナイ科の多年草(イラスト)。株の根もとから走出茎を出す。葉は根生し,葉柄があって斜めに立ち,水面よりも上に出る。葉柄は長さ20~60cmで,断面は三角形である。葉身は広楕円形で,長さ10~20cm,幅6~15cmあり,先はとがる。熱帯では周年開花をする。花茎は長さ20~80cmあり,断面は三角形で,先に約10個の花から成る散形状の集散花序をつける。花序の基部に数個の卵形の苞葉がある。
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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