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 700-800 m elev. Epiphyte on high trees. Flowers dull yellow; lip side lobes with reddish veins. Rare. NTH 2943 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.
Coordinates (geographic position):20° 51′ N, 104° 38′ E ±1000 mRecord creation: 2019-10-25, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01059086 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01059086