The mung bean is native to India, and is cultivated in China and much of Asia in general. This Asian vegetable plant was first grown in the U.S. in the late 19th century as a livestock feed.
It is known by many names, including green gram, lutou, look dou, moyashimame, and oorud.
The small pods contain about a dozen small BB sized seeds. One pound of seeds produces about 6 pounds of mung bean sprouts, the most popular form of this bean. Dried mung beans are also ground into flour, used to make 'cellophane noodles' in China.