The capillary artemisia (Capillary capillaris) belongs to Asteraceae (the Aster family). It is a perennial herb that is distributed to Honshu, Shikoku and Kyushu in Japan, as well as the Korean Peninsula and China. This herb grows in stream banks and sandy shores, and can reach 30-100 cm in height. The lower part of stems are woody. The leaves are once to twice pinnatly compound with filiform lobes. The panicles are borne on the terminal flowering stalks, and the small flower-heads bloom in September and October. The flower-heads are globose to ovate, 1.5-2 mm across, and used a herbal medicine for diuresis.