The runner bean (Phaseolus coccineus) belongs to Fabaceae (the Pea family). It is a perennial herb that is native from Mexico to Central America. This plant has thickening tubers. It is a perennial plant in tropical areas and it is an annual plant in temerate areas. There are vining varieties which usually grows 1-3 m long, and dwarf varieties. Because of its bearing has need of cool climate, it is culvated mainly in Hokkaido and Nagano prefecture in Japan. The vermillion-red, papilionacenous flowers bloom in July and August, and it produces large tigroid beans. The beans are used as raw materials of boiled beans, bean jams and sugar-glazed beans. The young pods are used for foods in Europe.