"Shide-shajin" (Asyneuma japonicum) belongs to Campanulaceae (the Bellflower family). It is a perennial herb that is distributed not only in various parts of Japan, but also in the Korean Peninsula and northeastern China. It grows in the mountains and can reach 50-100 cm in height. The leaves are ovate to oblong and alternate, with irregular serrations on the edges. From June to September, racemes are borne on the upper axils and bloom bluish-purple flowers. The corolla splits 5 from the base, opens flat and bends back. The style is protruding and the tip is split into three.