FLORA OF VIETNAM Orchidaceae Adiantum gravesii Hance Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Tan village, Thong (Conifer) Mountain, around point 23º07ʹ40.3ʺN 104º57ʹ11.2ʺE, at elevation 1000-1195 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and coniferous (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Lithophytic miniature fern on vertical shady mossy cliff. Rare. 19 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 453
Coordinates (geographic position):23° 7′ 40.3″ N, 104° 57′ 11.2″ E ±1000 mRecord creation: 2019-12-31, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01066732 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01066732