Answer: yautia

AnswerCrossword Clue
yautiaany of several aroid plants (genus Xanthosoma, especially X. sagittifolium) chiefly of tropical America with starchy edible shaggy brown tubers that are cooked and eaten like yams or potatoes
yautiastemless plant, Xanthosoma sagittifolium, of the arum family, cultivated in tropical America for its tuberous, starchy root, cooked and eaten like potatoes