Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Hong Kim Municipality, Dut village, about 2 km to NE from point 16°17'54''N, 107°12'41''E near A Nor waterfall at elevation about 600 m a.s.l. Open secondary shrubs and remnants of secondary broad-leaved forest on slopes of A Nor stream composed with shale and granite. Herbaceous vine 3-5 m long. Fruits green. Very common.