Lai Chau Prov., Sin Ho Distr., Phin Ho Mun., Ta Genh vill., around point 22?28′44′' N, 103?16′23′' E, 1200 m. Slopes of limestone mountains.
Terrestrial, in soil pockets between rocks. Rare. Flowers white. HAL 8795 12 Jun 2006 Photos. Collectors: P.K. Loc, N.T. Vinh, N.S. Khang, P.N. Quan and L.H. Phong.
Collected with the financial support from the Program of Basic Researchs in Life Sciences, Vietnam.