N. Vietnam, prov. Cao Bang, distr. Thach An, about 25 km to SSE from. Cao Bang town (N 22°27' E 106°22). Primary evergreen closed. semideciduous forest on tops of remnant limestone ridge at 500 m alt. Epilite herb on open rocks and vertical cliffs. Ripe fruits blue. Locally very common. No CBL 929, 05 Dec. 1998. International Botanical Expedition of the U.S.A. National Geographic. Society (grant No 6300-98). Collectors: Averyanov L., N.Q.Binh, N.X.Tam.
Coordinates (geographic position):22° 27′ N, 106° 22′ E ±1000 mRecord creation: 2019-02-22, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01049851 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01049851