S. Vietnam, Prov. Lam Dong, distr. Lac Duong, municipalite Da Chay, 35 km to NE from Dalat city. Closed primary broadleaved mt forest on W macroslope of Gia Rinh mt. ridge at 1600 m alt. (N 12° 09′, E 108° 41′). Prostrate herb on wet sandy places along stream in shadow mt canyon. Flowers white, central petal with violet nerves. Common. VH 3751 07.04.1997 International Botanical Expedition of the U.S.A. National Geographic Society (grant No 5803-96)