FLORA OF LAOS Asclepiadaceae Hoya verticillata (Vahl) G. Don
Luang Prabang prov., Ngoy distr., Ngoy village, Pha Noi Mountain, around point 20°42′53.6′'N 102°40′34.7′'E.
Remnants of primary evergreen forest on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 400-450 m a.s.l.
Epiphytic and lithophytic creeping semi-woody vine to 6-8 m long on mossy rocky mountain top. Flowers white to light yellowish or pinkish, very fragrant. Very common.