"Hana-ikari" (Halenia corniculata) belongs to Gentianaceae (the Gentian family). It is a biennial herb that is distributed all over Japan, as well as the Korean peninsula, northeastern China, Mongolia, and East Siberia. This herb grows on sunny meadows in the mountainous area and its height is 15 to 30 cm. The leaves are elliptic, opposite, with prominent three veins. The greenish, pale yellowish white flowers bloom on the axilary peduncles from August to September. The corolla is diveded into four deep lobes and the lower parts of lobes are extended spurs.