Xanthosoma sagittifolium known as Tannia, Yautia, Malanga, (New) Cocoyam, the Arrowleaf Elephant's Ear, or American Taro is a tropical flowering plant. It produces an edible, starchy corm. it is native to tropical America where it has been first cultivated. Tannia is among the world’s most important tuber crops and feeds 400 million people worldwide.