Peanuts are also known as Groundnuts (because they grow underground), Earthnuts, Goobers, Goober peas, Pindas, Pinders, Manila nuts and Monkey nuts (the last of these is often used to mean the entire pod, not just the seeds). Contents [showhide] 1 Origins 2 Cultivation 3 Cultivars of Peanuts 3.1 Spanish Group 3.2 Runner Group 3.3 Virginia Group 3.4 Valencia Group 3.5 Tennessee Red and Tennessee White Groups 4 Uses 5 Allergies 6 U.S. Department of Agriculture Program for Peanuts 7 Trade 8 See also 9 External links  Origins Archaeological evidence demonstrates that the peanut was domesticated in prehistoric times in South America, where wild ancestors are still found. The plant was later spread worldwide by European traders. Cultivation in North America was popularized by African American, who brought the Kikongo word goober.  Cultivation Peanuts, showing legumes, one split open revealing two seeds with their brown seed coatsThe flower of the Arachis hypogaea is borne above ground and after it withers, the stalk elongates, bends down, and forces the ovary underground.
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