Houphan Prov., Viengxay Distr., Xieng Luong village, around point 20°22′06.1′'N 104°17′18.6′'E. Primary and secondary broad-leaved evergreen dry forest on very steep rocky slopes of highly eroded mountains composed by solid marble-like limestone at elev. 600-700 m a.s.l. Creeping lithophyte on mountain top. Sepals an petals white to light yellowish with pale brown marks, lip white, column white, anther light yellowish. Locally very common. LA-VN 1208 8 April 2015 photos Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Somneuk Bouthamounty.
Coordinates (geographic position):20° 22′ 6.1″ N, 104° 17′ 18.6″ E ±1000 mRecord creation: 2020-06-26, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01068627 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01068627