Adansonia digitata, the baobab, is the most widespread tree species of the genus Adansonia, the baobabs, and is native to the African continent. The long-lived pachycauls are typically found in dry, hot savannahs of sub-Saharan Africa, where they dominate the landscape, and reveal the presence of a watercourse from afar. Their growth rate is determined by ground water or rainfall, and their maximum age seems to be in the order of 1,500 years. They can grow to between 5-25 m (16-82 ft) in height. The span of the roots actually exceed the tree's height, a factor that enables it to survive in a dry climate.