FLORA OF LAOS Asclepiadaceae Hoya verticillata (Vahl) G. Don
Vientiane prov., Vang Vieng distr., Khan Mac village, around point 18°51′26.4′'N 102°28′36.7′'E.
Secondary broad-leaved deciduous open dry forest with Euphorbia antiquorum on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 400-500 m a.s.l.
Long creeping semi-woody vine to 12 m long. Locally very common.