Dak Lak Province, Buon Don District, Yok Don National Park, open dry Dipterocarp forest and woodlands with dense low bamboo, at elevation 300-400 m a.s.l., herbaceous vine 3-4 m long in open place along trail. Flowers light pinkish. Not rare. 24 October 2019, L. Averyanov, Nguyen Van Canh, T. Maisak, AL 1173.