Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Bat Dai Son commune, Pai Chu Phin village, around point 23º07ʹ54.9ʺN 104º59ʹ24.1ʺE, 1000-1220 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. Woody vine 3-4 m long on rocky mountain top. Flowers dull yellow, center red. Not common. 16 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 271.
Record creation: 2019-05-03, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01054338 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01054338