Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, around point 17°41’25.6”N 105°53’40.4”E. Humid closed primary evergreen broad-leaved forest on shady rocky slope of stream valley composed with solid crystalline limestone at elevation about 460 m a.s.l. Woody vine to 15 m long. Fruits greenish. Not common.