S. Vietnam, Prov. Lam Dong, 31 km to NE from Dalat city, distr. Lac Duong, municipalite Da Chay, vicinities Klong Lanh village (N 12° 08′, E 108° 39′). Secondary shrub associations on open dry slopes on NW macroslope of Bi Dup mt system at 1450-1500 m alt. Herb up to 0.5 m hg with milky juise. Flowers yellow. Not rare. VH 2870 19.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)