"Naruko-yuri" (Polygonatum falcatum) belongs to Liliaceae (the Lily family). It is a perennial herb that is distributed throughout Japan, and as well as the Korean Peninsula. This herb grows in montane forests and can reach 50-80 cm in height. It resembles Solomon's seal closely, and is defined by round, no-ridged stem. The leaves are lanceolate to narrow lanceolate and alternate. The flowers are greenish-white, 3-5 per bundle, drooping and bloom on the axils from May to June. The Japanese name is derived from the shape of the flower, which resembles a "Naruko". "Naruko" was originally a tool to ward off birds, but it is also used as a musical instrument for dancing, including the "Yosakoi Naruko Odori" dance in Kochi Prefecture.