Indigenous tuber crops

Indigenous tuber crops, what an extremely broad term. Yams, taro and or coccoyams and a various other interesting looking plants your generally not sure whether they are ornamental or poisonous. I am really interested in edible Dioscorea species yams and grow a few cultivars of winged yam a white and two purple and an air potato which I think is awesome. Most of the plants in the yard are finishing up and going dormant for the year. Putting out "seed potatoes" for next year. Its been such a long hot year they are all a month behind which I think is interesting. This summer started early and refused to stop so plants like the Dioscorea yams just kept on growing. Really attractive vining plant if you have a fence or trellis and are looking for a good privacy screen that will give you something edible back in return I highly recommend putting a yam in.