"Kawara-akaza" (Chenopodium virgatum) belongs to Chenopodiaceae (the Goosefoot family). It is an annual herb that is distributed from Honshu to Shikoku and Kyushu in Japan, as well as Taiwan, the Korean Peninsula, and China. It grows in sandy soil along riverbanks and beaches, and is 30-60 cm tall. The stems are reddish, and the leaves are broadly linear to long ovate and alternate. The leaves have translucent membranous margins, and from May to October, long, slender inflorescences emerge from the stem tops and leaf axils, producing inconspicuous flowers. It is called "變葉藜" in Taiwanese Chinese and "狭葉尖頭葉藜" (xia ye jian tou ye li) in Chinese.