This is what I used to call "African Yellow Yam" (D. cayanensis) that now is being attacked by Yam Beetle.....last year it got a lightly infestation in early fall. Tim and I got the aerials maybe eight years ago while hiking the Hillsborough River in Sulphur Springs. I wonder how bad the damage will get. Time to once again check my Purple Ubes for damage as last year Andy Firk had 4 varieties of edible yam infested. The beetle was released by the state to control Air Potato (Dioscorea bulbifera). John