S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, vicinities Klong Lanh village, 31 km to NE from Dalat city (N 12° 08′, E 108° 39′). Secondary grasslands and shrub associations on river valley at foothills of NW macroslope of Bi Dup mt system at 1450 m alt. Terrestrial herb up to 10 cm hg in open wet place. Flowers yellow. Very common, Common weed. VH 3881 12.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)