An annual plant of the Pedaliaceae family, native to India. It was introduced to Japan from China and has been cultivated since ancient times. The stem is about 1m tall, square columnar, and hairy. The leaves are opposite, broadly lanceolate, 6-12cm long, and sometimes divided into three. In summer, pale purple, trumpet-shaped flowers bloom in the leaf axils. The fruit is an ellipsoid capsule divided into two to four lobes, and contains many seeds. There are many varieties, and the seeds are black, white, yellowish brown, etc., and are called black sesame, white sesame, and golden sesame, respectively. The seeds contain about 50% oil, and can be squeezed to extract sesame oil or eaten as is. Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information |
ゴマ科の一年草で,インド原産。日本には中国から伝来して古くから栽培されている。茎は高さ 1mぐらいの四角柱状で毛が多い。葉は対生し長さ6~12cmの広披針形,ときに3つに裂けることもある。夏に,葉腋に淡紫色を帯びたらっぱ状の花をつける。果実は楕円体状の 蒴果で2室ないし4室に分れ,中に多量の種子を生じる。品種が多く,種子の色に黒,白,黄褐色などがあり,それぞれ黒胡麻,白胡麻,金胡麻と呼ばれる。種子に 50%内外の油を含み,しぼって胡麻油をとり,またそのまま食用にする。
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