S.Vietnam, Thua Thien Hue Prov., Phu Loc Distr., Bach Ma National Park, primary mixed and broad-leaved evergreen forest on N slopes of Bach Ma range around point 16°11′10′'N 107°50′18′'E at elev. 1100-1200 m a.s.l. Herb vine 4-6 m long in shady wet place. Very rare. HLF 1333 26 April 2003. Coll. N.T.Hiep, L.Averyanov, N.T.Vinh et al. Grant from Henry Luce Foundation.
Coordinates (geographic position):16° 11′ 10″ N, 107° 50′ 18″ E ±1000 mRecord creation: 2020-10-17, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01073943 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01073943