Ha Giang Prov., Bac Me Distr., Phieng Luong municipality, around Phieng Luong village. Primary broad-leaved humid evergreen forest on very steep slopes and along rocky ridge composed with solid crystalline highly eroded limestone at elevation 1100-1150 m a.s.l. around point 22°38’07.1’’N 105°19’22.1’’E. Terrestrial fern among shady rocks along ridge edge. Not rare.
Record creation: 2026-02-10, Galina Savich, PhotoScan D2Citation: Specimen LE 01318741 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01318741