Cassia

...A shrub of the legume family (illustration) that is widely distributed in the wild in the tropics and cultivated for medicinal purposes. In Japan, it is found in Okinawa. It is often confused with the same genus, Habuso, and its seeds are used to make Habu tea. It grows to about 1m in height and has short hairs all over. The leaves are alternate, pinnately compound, usually consisting of three pairs of leaflets, each of which is obovate and 2-3cm long. The flowers are yellow with five radially arranged petals, and most of them grow in pairs in the leaf axils. The pods (legumes) are linear and slightly flattened, 15-25cm long, and the seeds are numerous, about 5-8mm long. ...

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

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…熱帯に広く野生状態で分布し，薬用に栽培もされるマメ科の低木性草本植物（イラスト）。日本では沖縄でみられる。同属のハブソウと混同され，種子ははぶ茶の原料とされる。高さ1mほどになり，全体に短毛を有する。葉は互生，通常3対の小葉からなる羽状複葉で，小葉は倒卵形，長さ2～3cm。花は黄色で放射状の5枚の花弁を有し，多くは2個が対をなして葉腋（ようえき）から出る。莢（さや）(豆果)は線形でやや扁平となり，長さ15～25cm，種子は多数で，長さ約5～8mm。…

※「Cassia」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