N. Vietnam, prov. Son La, distr. Moc Chau, municipality Chieng Hac, vicinities of Co Liu village (N 20°51′ E 104°38′). Primary evergreen broadleaved wet forest on very steep slopes and bluffs of remnant karst limestone ridge at 1000-1100 m elev. Epiphyte on high trees. Not common.
NTH 2988 29 May 1999
International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98)
Collectors: N.T.Hiep, P.H.Hoang, Averyanov L. NTH 3061 Gastrochilus intermedius (Griff. ex Lindl.) Kuentze Loan to LE