Lai Chau Prov., Sin Ho Distr., Xa De Phin Mun., Mao Xa Phin vill., 22?18′49′' N, 103?15′18′' E, 1828 m. Ridges and peaks of limestone mountains.
Annual herb; scattered in soil pockets between rocks. Flowers white. HAL 8723 08 Jun 2006 Collectors: P.K. Loc, N.T. Vinh, N.S. Khang, P.N. Quan and T.A. Suu
Collected with the financial support from the Program of Basic Researchs in Life Sciences, Vietnam.