Vientiane prov., Vang Vieng distr., Patang village, around point 19°04′15.6′'N 102°24′33.2′'E. Secondary broad-leaved semi-deciduous dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. about 670 m a.s.l. Lithophytic fern in shady places. Very common. LA-VN 1594 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):19° 4′ 15.6″ N, 102° 24′ 33.2″ E ±1000 mRecord creation: 2021-12-02, Tatiana Maisak, PhotoScan D2Citation: Specimen LE 01077702 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077702