Houphan Prov., Viengxay Distr., Vieng Xai village, around point 20°23'41.3''N 104°13'44.5''E. Primary and secondary broad-leaved evergreen dry forest on very steep rocky slopes of highly eroded mountains composed by solid marble-like limestone at elev. 800-950 m a.s.l.
Lithophytic rosulate fern on vertical shady cliffs. Very common.
Record creation: 2026-01-26 Tatiana Maisak, PhotoScan D2Citation: Specimen LE 01318717 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01318717