番薯
This list of sweet potato cultivars provides some information about varieties and cultivars of sweet potato ("Ipomoea batatas"). Sweet potato was first domesticated in the Americas more than 5,000 years ago. As of 2013, there are approximately 7,000 sweet potato cultivars. People grow sweet potato in many parts of the world, including New Zealand, Australia, the Philippines, Japan, Hawaii, China, and North America. However, sweet potato is not widely cultivated in Europe.