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 slopes on NW macroslope of Bi Dup mt system at 1450 m alt. Grass up to 3 m hg. Very common. Often monodominante in high grass grasslands, especially in wet places at 1000-1600 m alt. VH 3293 27.03.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)