S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay and Prov. Khanh Hoa, distr. Khanh Son boundary region, 41 km to NE from Dalat city. Primary closed broadleaved cloud forest on tops of Nui Hon Giao ridge at 1950-2050 m alt. (N 12° 11′, E 108° 43′). Woody grass up to 3-4 m hg. Very common. Domonante of 2 forest stratum on tops of ridge at 1900-2000 m alt. VH 4209 23.04.1997 International Botanical Expedition of the U.S.A. National Geographic