N. Vietnam, prov. Cao Bang, distr. Thach An, municipality Van Trinh, (N 22°21′ E 106°27′), about 39 km to SSE from Cao Bang town. Secondary open semideciduous broadleaved forest on steep slopes near tops of remnant limestone ridge at 600 m alt. Epiphyte. Not common. CBL 832 03 Dec. 1998 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98) Collectors: Averyanov L., N.Q.Binh, P.K.Loc, N.X.Tam.
Coordinates (geographic position):22° 21′ N, 106° 27′ E ±1000 mRecord creation: 2020-10-17, Leonid Averyanov, PhotoScan D2. Processing status: work_status_1Citation: Specimen LE 01073832 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01073832