Cultivated plant, origin from Thanh Hoa province (HAL 4272) N.Vietnam, Thanh Hoa Prov., Ba Thuoc Distr., Thanh Son Municipality, SW macroslope of middle part of Pu Luong range, around point 20º28'30''N, 105º05'16''E. Primary evergreen seasonal broad-leaved closed submontane forest on basalt at elev. 1500-1550 m. Epiphytic vine. Occasional.
Record creation: 2021-11-12, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01122791 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01122791