N. Vietnam, prov. Cao Bang, distr. Nguyen Binh, municipality Ca Thanh. (N 22°44' E 105°50'). Primary semideciduous broad-leaved forest on. steep slopes and bluffs of remnant karst limestone ridge at 1250-1300. elev. Terrestrial herb among shady rocks. Flowers light lilac. Common. No CBL 1281 13 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: 2019-02-22, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01049312 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01049312