Vientiane prov., Vang Vieng distr., Oa Hom village, around point 19°06′52.4′'N 102°22′35.8′'E.
Secondary broad-leaved evergreen and semideciduous dry forest with on very steep rocky mountain slopes composed by solid marble like highly eroded limestone at elev. 550-650 m a.s.l.
Semi-woody vine in rather open place on rocky steep slope. Fruits red. Not rare.