Alfalfa mù xu plant name. Leguminosae, annual or perennial. Originated in western countries, when Emperor Wu of the Han Dynasty, Zhang Qian made the Western Regions and was introduced from Dawan. Also known as Huaifengcao, Guangfengcao and Lianzhicao. The flower has two colors of Rayna Sue, and the original introducer is purple. It can be used as feed or fertilizer, and can also be eaten.