Yam is the common name for some species in the genus Dioscorea (family Dioscoreaceae). These are perennial herbaceous vines cultivated for the consumption of their ... en.wikipedia.org
Sweet Potato and Yam Differences Learn the difference between a sweet potato and a true yam. By Peggy Trowbridge Filippone, About.com Guide homecooking.about.com
Dioscorin, a storage protein contained in yam, may also be of benefit to certain individuals with hypertension. Preliminary research suggests that dioscorin can inhibit ... www.whfoods.com