Luang Prabang prov., Ngoy distr., Don Khun village, near waterfall, around point 20°31′36.9′'N 102°35′15.8′'E. Remnants of primary evergreen forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 450-550 m a.s.l. along mountain stream. Lithophytic fern on waterfall cliffs. Common. LA-VN 2027 2 April 2017 Coll.: L.Averyanov, N.T.Hiep, N.S.Khang, C.Q.Ngan, T.Maisak, Vichith Lamxay, Koudkeo Phommachanh, Phizar Sayalath, Keooudone Souvannakhoummane.
Coordinates (geographic position):20° 31′ 36.9″ N, 102° 35′ 15.8″ E ±1000 mRecord creation: 2021-12-02, Tatiana Maisak, PhotoScan D2Citation: Specimen LE 01077692 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077692