Vietnam, Quang Binh Prov., Quang Ninh Distr., Truong Son municipality, around Chan Trong village at 17є10’49’’N 106є29’22’’E. Secondary dry broad-leaved forest on steep slopes of highly eroded karst limestone hills composed with gray solid marble limestone along Long Dai River, at elevation about 30 m a.s.l. Woody vine to 20 m long. Flowers white, fragrant. Not common.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360747 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360747