The runner bean ("Phaseolus coccineus") is a kind of bean commonly grown in gardens. It is also known as scarlet runner bean or multiflora bean. It is part of the Fabaceae, which also contains other legumes. It may also be called butter bean, but that name can also be used for the Lima bean, which is a different species. The runner bean originally grew in South America. It was brought to Europe in the 17th century. 