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.
Grass up to 2.5 m hg in open places. Very common. Often dominante in high tall grass grasslands especially in wet places at 1450-1600 (1700) m alt. VH 4028 17.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)