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 shady old trees on mountain top. Very common. LA-VN 1410 TM 1319 12 April 2015 Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Hieu, T.Maisak, Pheng Phengsintham.
Fl. in cultivation in 19 November 2021. Photos. L.Averyanov
Coordinates (geographic position):20° 9′ 52.6″ N, 103° 10′ 19.4″ E ±1000 mRecord creation: 2021-12-04, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01077841 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077841