Vientiane prov., Vang Vieng distr., Khan Mac village, around point 18°51′26.4′'N 102°28′36.7′'E. Secondary broad-leaved deciduous open dry forest with Euphorbia antiquorum on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 400-500 m a.s.l. Clustering pendulous epiphyte. Locally common. LA-VN 1566 23 March 2017 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Khamla Inkhavilay, Hongthong Southyvohanh, Pinmany Sisavath, Chanthala Cheuaysamphanh.
Coordinates (geographic position):18° 51′ 26.4″ N, 102° 28′ 36.7″ E ±1000 mRecord creation: 2020-10-17, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01073828 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01073828