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"A genus of plants of the natural order Leguminosae, sub-order Papilionaceae, natives of the warm parts of America, of which, until recently, the only known species was the A. hypogaea, sometimes called the underground kidney-bean, and more frequently the ground-nut. It also receives the names of earth-nut, American earth-nut, and mandubi." — Chambers' Encyclopedia, 1875

Arachis

"A genus of plants of the natural order Leguminosae, sub-order Papilionaceae, natives of the warm parts…

"Common Peanut (Arachis hypogæa). a, flowers; b, ovaries on lengthened stipes; c, forming fruit; d, ripe pod; e, pod opened, showing seeds."-Whitney, 1902

Common peanut

"Common Peanut (Arachis hypogæa). a, flowers; b, ovaries on lengthened stipes; c, forming fruit;…