Luang Prabang prov., Ngoy distr., Nong Khiew village, Pha Deng Mountain around point 20°34′14.3′'N 102°37′31.8′'E. Secondary semideciduous and evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 700-825 m a.s.l. Terrestrial and lithophytic fern on mossy mountain top. Common. LA-VN 1893 31 March 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° 34′ 14.3″ N, 102° 37′ 31.8″ E ±1000 mRecord creation: 2021-12-02, Tatiana Maisak, PhotoScan D2Citation: Specimen LE 01077691 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077691