The sweet potato (Ipomoea batatas) is a dicotyledonous plant that belongs to the family Convolvulaceae. Amongst the approximately 50 genera and more than 1,000 species of this family, only I. batatas is a crop plant whose large, starchy, sweet tasting tuberous roots are an important root vegetable (Purseglove, 1991; Woolfe, 1992). The young leaves and shoots are sometimes eaten as greens. The sweet potato is only distantly related to the potato (Solanum tuberosum). The softer, orange variety is commonly marketed as a yam in parts of North America, a practice intended to differentiate it from the firmer, white variety. The sweet potato is very distinct from the other plant known as a yam (in the Dioscoreaceae family), which is native to Africa and Asia. To prevent confusion, the United States Department of Agriculture requires that sweet potatoes labelled as "yams" also be labelled as "sweet potatoes".
Your changes have been saved.