Indian senna (English spelling) Indiansenna

...The legume is flattened, rectangular with rounded ends, 2-2.5 cm wide. The very similar C. angustifolia Vahl. has narrower leaves and the legume is less than 2 cm wide. Its English name is Indian senna, as it grows abundantly in India, or Tinnevelly senna, based on its local name. The leaves of both species are called senna leaves, and are used as a laxative and for constipation.

*Some of the terminology that mentions "Indian senna" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…豆果は扁平で，両端は丸みを帯びる長方形で，幅2～2.5cm。よく似たホソバセンナC.angustifolia Vahl.は葉がより狭長で，豆果の幅は2cm以下であり，英名をインドに多産するためIndian senna，または地方名からTinnevelly sennaという。どちらも葉をセンナ葉（よう）と称して，緩下剤や便秘に用いる。…

※「Indian senna」について言及している用語解説の一部を掲載しています。

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