Quang Binh Prov., Minh Hoa Distr., Thuong Hoa municipality, around point 17°41'28"N 105°53'42.7"E. Primary closed evergreen broad-leaved forest on rocky very steep cliffy slope of remnant mountain composed with solid crystalline limestone at elevation about 700 m a.s.l. near to the top of mountain. Creeping epiphytic and lithophytic vine. Flowers violet. Very common. CPC 3950 5 August 2011. Coll.: N.T.Hiep, L.Averyanov, N.S.Khang, N.Q.Vinh, N.V.Tap, P.V.The, L.T.Kien.
Coordinates (geographic position):17° 41′ 28″ N, 105° 53′ 42.7″ E ±1000 mRecord creation: 2019-06-12, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01055312 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055312