Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, around point 17°41’19”N 105°53’35.5”E. Primary closed evergreen broad-leaved forest on higher part of remnant mountain rocky slope composed with solid highly eroded crystalline limestone at elevation about 566 m a.s.l. Woody vine to 10 m long. Ripe fruits brightly red. Common.