S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 26-28 km to NE from Dalat city. Old open secondary dry coniferous mt forest with domination of Pinus kesiya at 1500-1700 m alt. in 8-10 km from Bi Dup main peak to the NW (N 12° 07′, E 108° 36′). Epiphyte on mossy trees, mostly on Lyonia sp. Flowers pale yellow, lip pale yellow with purple margin. Rare. VH 3836 10.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)