Where does the sweet potato buttercup which looks like taro grow? Is it toxic? What if I eat it by mistake?

White potato buttercup, also known as Bang potato, wild kudzu, Dali king, etc., its flowering period from April to May, fruit period from July to September, the appearance of brown, scattered fibrous roots, cross-section fresh white. So, where does this taro-like sweet potato buttercup grow? Is it toxic? What if you eat it by mistake?