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. (12°05′N 108°40′E). Epiphyte on high trees. Flowers purple-violet, spur white. Not common.
VH 2991 21.03.1997
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)