Scientific name: Hairy potato.

Rhizome of Winged Yam, also known as ginseng potato, Lidong potato, big potato, potato seed, etc., is the tuber of the Dioscoreaceae plant Rhizome of Winged Yam. The nature and flavor are sweet, flat and non-toxic. Its form is: ginseng potato, a perennial twining herb. The tubers are fleshy, up to 60 cm long, and come in many shapes and colors. Stem acutely square or with 4 narrow wings, smooth and hairless. The leaves are opposite; there are often a few seeds in the leaf axils; the leaves are heart-shaped ovate to heart-shaped oblong, and the lobes are nearly round, 8 to 16 cm long. It is 5 to 8 cm wide, with a sharp apex and a heart-shaped base with 7 to 9 veins. Cultivated or wild. Distributed in Fujian, Guangdong, Guangxi and other places. It is mainly used to treat diarrhea due to spleen deficiency, spermatorrhea due to kidney deficiency, vaginal discharge, frequent urination, cough due to fatigue, thirst, sores and ulcers, and burns caused by soup. It has the effects of strengthening the spleen and stopping diarrhea; nourishing the lungs and nourishing the kidneys; detoxifying and curing sores.