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. Terrestrial and lithophytic fern on steep rocky slope. Flowers light lilac. Not common. 19 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 500.
Coordinates (geographic position):23° 7′ 40.3″ N, 104° 57′ 11.2″ E ±1000 mComment:
Record creation: 2019-08-03, Аверьянов Леонид ВладимировичCitation: Specimen LE 01061420 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01061420