Houphan Prov., Viengxay Distr., Xieng Luong village, around point 20°22'06.1''N 104°17'18.6''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. 600-700 m a.s.l.
Terrestrial rosulate fern on shady rocky slope. Locally common.
Record creation: 2026-01-26 Tatiana Maisak, PhotoScan D2Citation: Specimen LE 01318679 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01318679