S. Vietnam, Prov. Lam Dong, 29 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay. Closed broadleaved cloud forest on main peak of Bi Dup mountain system at 2260 m alt. (N 12° 05′, E 108° 40′). Shrub up to 1.5 m hg. Flowers from purple-violet to light violet. Rare. VH 2998 21.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)