Vietnam, Thua Thien – Hue Prov., Huong Thuy Distr., Duong Hoa Municipality, Huong Thuy forest enterprise territory, around point 16°13′36′'N, 107°35′09′'E, SW slopes of Mang Chan ridge at elevation about 450-500 m a.s.l.
Fractionally logged primary closed evergreen broad-leaved forest along steep slopes composed with shale with quartzite.
Creeping epiphytic woody vine 15-20 m long. Inflorescences white. Not common.