Beans                                

The common bean has been cultivated for six thousand years in the Americas. Beans are one of the longest-cultivated plants. Broad beans, with seeds the size of the small fingernail. Beans were an important alternative source of protein throughout Old and New World history, and still are today. 
There are over 4,000 cultivars of bean on record in the United States alone. An interesting modern example of the diversity of bean use is the modern urban recipe 15 bean soup, which, as the name implies, contains literally fifteen different varieties of bean.