Lai Chau Prov., Sin Ho Distr., Phin Ho Mun., Ta Genh vill., around point 22?28′31′' N, 103?16′53′' E, 1000 m. Foot and lower slopes of limestone mountains.
Woody vine. Rare. HAL 8760 10 Jun 2006 Photos Collectors: P.K. Loc, N.T. Vinh, N.S. Khang and P.N. Quan.
Collected with the financial support from the Program of Basic Researchs in Life Sciences, Vietnam.