Lai Chau Prov., Sin Ho Distr., Phin Ho Mun., Ta Genh vill., around point 22?28′44′' N, 103?16′23′' E, 1326 m. Upper slopes and ridges of limestone mountains.
Lithophyte. Rare. Flowers greenish, turning brownish. HAL 8792 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.