Houphan Prov., Viengxay Distr., Vieng Xai village, around point 20°23'41.3"N 104°13'44.5"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. 800-950 m a.s.l. Creeping epiphyte on old large trees on mountain top. Common. LA-VN 1152 7 April 2015. Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Somneuk Bouthamounty.
Coordinates (geographic position):20° 23′ 41.3″ N, 104° 13′ 44.5″ E ±1000 mRecord creation: 2019-06-11, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01055140 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055140