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. Woody vine 3-4 m long with sticky latex on shady rocky mountain slope. Flower buds light greenish. Occasional. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 386 (HN, LE).
Coordinates (geographic position):23° 7′ 46.4″ N, 104° 57′ 56.2″ E ±1000 mComment:
Record creation: 2020-01-05, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01067265 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01067265