Vientiane Prov., Vang Vieng Distr., Phoudindeng village, 1-2 5 km to the E of Vang Vieng town around point 18°57’48.7”N 102°27’34.0”E. Dry broad-leaved secondary evergreen forest with bamboo on low hills composed by shale at elevation about 400 m. Woody vine or scandent shrub with shoots to 5 m long. Floral bracts pure white, flowers yellow. Very common, particularly on open slopes.