N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Yen Lac, vicinities of Yen Lac village (N 22°44′ E 105°50′). Primary open broadleaved semideciduous forest on vertical cliffs of karst remnant limestone ridge of N exposition at 1300 m elev. Creeping lithophyte vine up to 6-8 m lg. Not common. CBL 1585 20 April 1999 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98) Collectors: P.K.Loc, P.H.Hoang, Averyanov L.
Coordinates (geographic position):22° 44′ N, 105° 50′ E ±1000 mRecord creation: 2020-10-17, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01073989 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01073989