N. Vietnam, prov. Ha Giang, distr. Dong Van, municipality Ho Quang Phin, vicinities of Ta Xa village, 14-16 km to SSW of Dong Van town (N 23°16′ E 105°22′). Primary very wet mossy cloud mixed forest (with domination of Tsuga chinensis and Pinus kwangtungensis) along tops of karst remnant limestone ridge at 1550-1600 m elev. Climbing shrub up to 3 m hg in open rocks. Flowers white. Not common. CBL 1743 28 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):23° 16′ N, 105° 22′ E ±1000 mRecord creation: 2021-11-09, Leonid Averyanov, PhotoScan D2Citation: Specimen LE 01077265 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01077265