N. Vietnam, prov. Ha Giang, distr. Meo Vac, municipality Sung Chang, vicinities of Lu Lu Phin village (N 23°11′ E 105°18′). Secondary short tall grasslands and secondary shrubs on alluvial foothills of karst remnant limestone ridge among limestone rocks at 1300 m elev. Creeping woody vine 2-3 m lg on open mossy rocks. Flowers white, sweet fragrant. Not common.
CBL 1810 29 April 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)