S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 29 km to NEE from Dalat city. Old open evergreen broadleaved secondary forest rich in primary elements along mt river on W macroslope of Bi Dup mt system at 1450 m alt. (N 12° 08′, E 108° 39′). Epiphyte on high trees over river. Flowers: tepals light lilac with violet stripes, lip whitish with light violet stripes and yellow tip of epichile. Not rare. VH 4000 16.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)