"Daisagi-so" (Habenaria dentata) belongs to Orchidaceae (the Orchid family). It is a perennial herb that is distributed from Chiba Prefecture of Honshu to Shikoku and Kyushu in Japan, as well as Taiwan, China, the Indochina Peninsula and the Hymalayas. This herb grows in sunny grasslands and bogs, and up to a height of 30-60 cm. The leaves are oblong-lanceolate and most of the leaves grow on the bottom of the stem. The many white flowers bloom in the apical raceme from August to October.