Vientiane prov., Kasi distr., between Pa Chao and Nam Ken villages, Pa Chao Mt., around point 19°19′35.5′'N 102°22′57.7′'E. Secondary broad-leaved evergreen dry forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 1100-1200 m a.s.l. Lithophytic and epiphytic fern on rather open steep rocky slope. Common. LA-VN 1756 27 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° 19′ 35.5″ N, 102° 22′ 57.7″ E ±1000 mRecord creation: 2021-12-02, Tatiana Maisak, PhotoScan D2Citation: Specimen LE 01077700 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077700