Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Huong Nguyen Municipality, in vicinities of Tra Ve forest protection station, around point 16°13′47′'N, 107°27′47′'E at elevation about 120-300 m a.s.l.
Secondary closed evergreen broad-leaved forest on steep hill and mountain slopes composed with shale.
Woody vine 2-Terrestrial herb on shady slope. Flowers white, tepals at apex sometimes with pink-violet tint. Very common. Co-dominant of hrb forest stratum.