N. Vietnam, prov. Cao Bang, distr. Bao Lac, municipality Yen Lac, vicinities of Yen Lac village (N 22°44′ E 105°50′), about 44 km to NWW from Cao Bang town. Secondary open shrubs among limestone rocks on alluvial foothills of limestone remnant ridge at 1100 m alt. Herb up to 1 m hg. Flowers violet. Commonest weed in the area.
CBL 445 18 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° 44′ N, 105° 50′ E ±1000 mRecord creation: 2019-08-29, Leonid Averyanov, PhotoScan D1Citation: Specimen LE 01055957 // Virtual herbarium of Komarov Botanical Institute RAS — http://re.herbariumle.ru/01055957