Houphan Prov., Hem Distr., Nacoc village, Puphadeng mountain, around point 20°09'52.6"N 103°10'19.4"E. Primary and secondary broad-leaved evergreen open dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 1000-1200 m a.s.l. Epiphyte on old trees on mountain top. Not common. LA-VN 1419 12 April 2015. Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham.
Coordinates (geographic position):20° 9′ 52.6″ N, 103° 10′ 19.4″ E ±1000 mRecord creation: 2019-05-23, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01054571 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01054571