FLORA OF VIETNAM Asclepiadaceae 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. Herbaceous vin to 6 m long in rather open place. Flowers purple-violet. Common. 19 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 495.
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 01061415 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01061415