S. Vietnam, Prov. Lam Dong, 29 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay. Primary wet closed broadleaved cloud forest along main Bi Dup ridge at 1900-2000 m alt. (N 12° 06′, E 108° 39′). Epiphyte on high trees. Flowers yellow-brown, central sepal white with purple-brownish center. Rare. VH 3120 23.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)