Vietnam, Thua Thien – Hue Prov., A Luoi Distr., Huong Nguyen Municipality, in vicinities of Tra Ve forest protection station, around point 16°16'08''N, 107°26'29''E at elevation about 125 m a.s.l. Secondary closed evergreen broad-leaved forest on hill slopes composed with shale. Woody vine 10-12 m long. Flowers red-purple. Not common.
Record creation: 2026-10-19, Аверьянов Леонид ВладимировичCitation: Specimen LE 01360732 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01360732