Saravan Prov., Sa Mouay Distr., to the SEE of Sa Mouay town, elevation from Ta Oy village (700 m elev.) to mountain ridge with highest point at 1350 m around 16°08’47.0”N 106°52’35.4”E. Primary evergreen humid mixed and coniferous forest on slopes composed with silicate rocks. Shrub 2-4 m tall on tops of ridge. Flowers light pink to almost white. Common.