S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 32.5 km to NE from Dalat city (N 12° 07′, E 108° 41′). Very old open secondary cloud mossy mixed forest with domination of Pinus kesiya, Lyonia sp. and Lithocarpus sp. along ridge on NNW macroslope of Bi Dup mt system at 1700-1800 m alt. Herb up to 0.6 m hg. Flowers light violet. Not rare. VH 3315 28.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)