S. Vietnam, Prov. Lam Dong, 29 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay. Primary mixed cloud forest with Fokienia hodginsii on peaks of Bi Dup ridge at 2150 m alt. in 1.5 km to N from main peak of mt system (N 12° 06′, E 108° 39′). Epiphyte. Flowers white, epichile yellow, sidelobes of lip with purple nerves. Abundant. on Fokienia. Abundant. VH 3057 22.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)