FLORA OF LAOS Asclepiadaceae Hoya verticillata (Vahl) G. Don
Luang Prabang prov., Pon Xay distr., between Houay Man and Nam Bo villages, Phou Hua Ben Toc Mountain, around point 19°57′33.1′'N 102°25′25.8′'E.
Degraded primary evergreen and semideciduous forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 500-650 m a.s.l.
Long creeping semi-woody vine 6-8 m long. Flowers white to light yellowish, center of corona purple. Locally very common.