Jump to navigation Jump to search « Water yam » redirects here. Dioscorea alata, known as purple yam, ube or many other names, is a species of yam, a tuberous root vegetable. With its origins in the Asian tropics, D. Because it has become naturalized throughout tropical South America, Africa, Australia, the catalogue des plantes vasculaires du Mali PDF U.
In English alone, aside from purple yam, other common names include greater yam, Guyana arrowroot, ten-months yam, water yam, white yam, winged yam, or simply yam. The color of purple varieties is due to various anthocyanin pigments. The pigments are water-soluble, and have been proposed as possible food coloring agents. Dioscorea alata was first described and published in Species Plantarum 2: 1033. The Plant List: A Working List of All Plant Species ». Understanding aspects of Yoruba gastronomic culture ». The Yam: A Tropical Root Crop.