S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 40 km to NE from Dalat city. Closed primary wet broadleaved cloud forest on SW macroslope of Hon Giao mt. ridge at 1700 m alt. (N 12° 11′, E 108° 43′). Herb 0.5-0.8 m hg on wet steep slopes of strean canyon. Flowers white. Common. VH 4126 21.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)