The Austronesian Comparative Dictionary

*taŋkuŋ an edible plant, swamp cabbage: Ipomoea aquatica

PPh taŋkuŋ an edible plant, swamp cabbage: Ipomoea aquatica

WMP
Tboli taŋkuŋ ~ tlaŋkuŋ swamp cabbage, a smooth, widely-spreading vine with stems trailing on mud or floating on stagnant pools; young leaves and stems are eaten as a leafy vegetable: Ipomoea aquatica
Agutaynen taŋkoŋ a plant with leaves and stalks like spinach, used as a vegetable