Austral sage (Salvia plebeia) belongs to Lamiaceae (the Mint family). It is a biennial herb that is distributed westward from Honshu to Shikoku and Kyushu of Japan, the Korean Peninsula, China, Taiwan, India and Australia. This herb grows in wettish grasslands and rice field linches, and can reach 30-70 cm in height. The cauline leaves are oblong, 3-6 cm long, and the basal leaves are long-ovate with petioles and blight in flower season. The flowers are pale purple, small labiate and bloom in panicles from May to June.