Hog Peanut seeds - Amphicarpa bracteata seeds ($4 for 10 seeds)
See full description under hog peanut "tuber": http://www.nortonnaturals.com/product-p/ab.htm
We also have a small supply of Amphicarpa bracteata aerial seeds (as opposed to the underground seeds listed under the main entry). Very limited supply. $4 for 10 seeds. Germination is very easy: as soon after all risk of frost has passed, soak in water overnight, and sow in its final location. Full sun or partial shade, prefers a rich loam. It's a climber, but works well as a ground cover. $4 for 10 seeds.