N. Vietnam, prov. Cao Bang, distr. Ha Lang, municipality Dong Loan, vicinities of Ban Lung and Lung Phuc (N 22°46′ E 106°44′), about 50 km to E from Cao Bang town. Secondary evergreen forest on alluvial valley among limestone rocks on foothills of remnant limestone ridges at 400 m alt. Terrestrial herb in wet open place at the base of limestone bluffs. Flowers yellow. Not common. CBL 590 24 Nov. 1998 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 6300-98) Collectors: Averyanov L., P.K.Loc, N.X.Tam.
Coordinates (geographic position):22° 46′ N, 106° 44′ E ±1000 mRecord creation: 2019-08-29, Leonid Averyanov, PhotoScan D1. Processing status: work_status_1Citation: Specimen LE 01055948 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055948