Ha Giang Prov., Quan Ba Distr., Tung Vai Commune, Thang Village, around point 23.05349ºN 104.86446ºE, steep rocky slopes of river valley composed with eroded limestone mixed with sandstone at elevation 1000–1100 m a.s.l. Remnants of primary evergreen broad-leaved very humid forest along river. Terrestrial fern on very steep river slope. Fronds to 1.6 m tall. Common. 7 October 2019, L. Averyanov, Nguyen Sinh Khang, T. Maisak, VR 1443.
Coordinates (geographic position):23° 3′ 12.56″ N, 104° 51′ 52.06″ E ±1000 mComment:
Record creation: 2020-01-02, Аверьянов Леонид ВладимировичCitation: Specimen LE 01061065 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01061065