Vientiane Prov., Vang Vieng Distr., Na Khun Village, around point 18°52′28”N 102°24′21”E. Remnants of primary evergreen broadleaved forest on flat alluvial valley at the base of high remnant hills composed with solid marble-like highly eroded rocky limestone at elevation around 300 m a.s.l. Lithophytic creeping herb on large mossy boulders at the base of limestone hill. Sepals dull pinkish-brown, petals and lip pure white. Locally common. LA-VN 078 21 January 2009 Photo Coll.: O.Souliya, N.T.Hiep, L.Averyanov, P.K.Loc, N.Q.Hieu, B.G.Elkington
Coordinates (geographic position):18° 52′ 28″ N, 102° 24′ 21″ E ±1000 mRecord creation: 2019-10-25, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01059150 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01059150