Luang Prabang prov., Ngoy distr., Nong Khiew village, Ta Nang Non Mountain around point 20°33’29.2’’N 102°36’54.5’’E. Secondary semideciduous and evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 600-650 m a.s.l. Epiphyte on old mossy tree on rocky mountain top. Not common. LA-VN 1920 31 March 2017. Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Vichith Lamxay, Koudkeo Phommachanh, Phizar Sayalath, Keooudone Souvannakhoummane.
Flowered in 6 August 2019, L. Averyanov, LA–VN 1920.1, flowers yellowish, lip white with purple center of epichile. Photos.
Coordinates (geographic position):20° 33′ 29.2″ N, 102° 36′ 54.5″ E ±1000 mRecord creation: 2019-08-21, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01058598 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01058598