N. Vietnam, Prov. Quang Binh, distr. Minh Hoa, 72 km to NWW from Dong Hoi, municipalite Thong Hoa, vicinities of Yen Son village, limestone massif Ke Bang (N 17°40′ E 105°57′). Remnant open evergreen primary broadleaved forest along river in alluvial valley bottom between limestone ridges and mesas at 200 m alt. Epiphytic shrublet up to 1.5 m hg on trees over river. Tepals light pinkish with dull pink small numerous spots, lip white with pale yellowish center. Common. Flowers pleasant sweet smelled. VH 4732 17.05.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)