A creeping vine that runs along the ground, with large and small tubers on the roots, arm-sized or smaller; leaves are roundish; there are many varieties, named by flesh color, e.g., white-fleshed called ມັນດ້າງຂາວ, yellow-fleshed called ມັນດ້າງເຫຼືອງ, collectively called ມັນດ້າງ.