Dioscorea rotundata, commonly known as white yam, is a species of yam native to West Africa. It is a tuberous plant that produces large, edible underground tubers, which are a staple food in many tropical regions. The plant thrives in well-drained, loamy soils and requires a warm climate for optimal growth. The tubers of Dioscorea rotundata are rich in carbohydrates and provide essential nutrients, making them an important source of energy. They can be prepared in various ways, including boiling, frying, or baking, and are often used in traditional dishes across West African cuisine.