Taro is a perennial tuberous plant, often cultivated as an annual crop. Leaf blade peltate, petiole long and fat, green or purplish red; plant base to form a shortened stem, gradually accumulate nutrients to hypertrophy into a fleshy bulb, known as "taro" or "mother taro", spherical, ovate, oval, or tuberous and so on. The mother taro has a brain bud in each section, but the axillary buds in the middle and lower nodes are the most active, and the first tiller occurs, forming a small bulb called "taro", and then "grandson taro" occurs from the grandson taro, which can form great-grandson or great-grandson taro, etc., under the suitable conditions. Sweet potato (scientific name: Ipomoea batatas), also known as sweet potato, sweet potato, yam, sweet potato, sweet potato, red potatoes, line potatoes, white potatoes, gold potatoes, sweet potatoes, vermilion potatoes, cushion potatoes and so on. Common perennial dicotyledonous, herbaceous plant with slender vines and creeping stems. Tuberous roots, anaerobic respiration produces lactic acid, whitish or reddish skin color, flesh mostly yellowish white, but also purple, in addition to for food, but also can be sugar and brewing, alcohol