FLORA OF LAOS Cannabiabaceae Humulopsis scandens (Lour.) Grudz.
Luang Prabang prov., Pon Xay distr., Houay Man village, Phou Tham Keo Mountain, around point 19°57′44.2′'N 102°25′45.8′'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.
Terrestrial herbaceous vine to 5 m long in open place among open secondary shrubs along stream. Flowers greenish. Locally very common.