The sweet potato (Ipomoea batatas) is a dicotyledonous plant that belongs to the family Convolvulaceae.
Its large, starchy, sweet-tasting, tuberous roots are a root vegetable. The young leaves and shoots are sometimes eaten as greens.
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Of the approximately 50 genera and more than 1,000 species of Convolvulaceae, I. batatas is the only crop plant of major importance—some others are used locally, but many are actually poisonous.
Here are our articles where we talk about this Japanese Sweet Potato: