A perennial plant of the Scrophulariaceae family that grows on sandy coastal soil (illustration). It is said to have been named Kairan because its flowers resemble orchids. The stems rise obliquely to a height of 20-30 cm. The leaves are slightly fleshy, greenish-white, elliptical, and arranged in opposite or whorls, with the upper leaves arranged alternately. In summer, a short raceme is produced at the end of the stem, and several flowers are produced. The flowers are yellowish-white and have a mask-like corolla with a yellow-orange throat that is raised. The tube is 1.5-2 cm long and has a spur that extends 0.5-1 cm backward at the base of the corolla tube. The fruit is spherical, about 8 mm in diameter, and contains many black seeds, which are scattered by irregular cracks at the top. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
海岸の砂地に生えるゴマノハグサ科の多年草(イラスト)。花がランを思わせるので,海蘭とついたといわれる。茎は斜上して高さ20~30cm。葉はやや肉質で緑白色,楕円形で対生または輪生し,上部のものは互生する。夏に茎の先に短い総状花序をつくり,数個の花をつける。花は黄白色で,黄橙色の花喉が盛り上がった仮面上花冠である。長さ1.5~2cm,花冠の筒の基部に長さ0.5~1cmの後方に伸びる距がある。果実は球形で径8mmほど,多数の黒色の種子があり,上部が不規則に裂けて種子を散らす。
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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