Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23º07ʹ46.4ʺN 104º57ʹ56.2ʺE, at elevation 1000-1190 m a.s.l., karstic, highly eroded mountains composed of solid marble-like limestone, primary evergreen broad-leaved and mixed (with Pseudotsuga sinensis) humid forest on steep rocky slopes near mountain tops. Terrestrial and lithophytic undershrub to 1.5 m tall on shady rocky mountain slope. Flowers white. Not common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 410 (HN, LE01061444 – photo).
Coordinates (geographic position):23° 7′ 46.4″ N, 104° 57′ 56.2″ E ±1000 mRecord creation: 2020-01-05, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01067330 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01067330