FLORA OF VIETNAM
Apocynaceae
Toxocarpus villosus (Blume) Blume

Ha Giang prov., Quan Ba distr., Bat Dai Son Nature Reserve, Thanh Van commune, Mo Sai village, around point 23°07ʹ46.4ʺN 104°57ʹ56.2ʺE, 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. Herbaceous to semi-woody vine 6-8 m long on open rocky mountain slope. Flowers light yellowish. Not common. 18 April 2018, L. Averyanov, Nguyen Sinh Khang, Chuong Quang Ngan, T. Maisak, VR 380 (HN, LE01061498, LE01067044). Det.: M. Rodda 11.10.2019.