Thua Thien - Hue Prov., A Luoi Distr., Huong Nguyen municipality, around point 16°06’04”N 107°27’55”E.
Pristine primary broadleaved and mixed (with Dacrycarpus imbricatus) evergreen forest along mountain ridge composed with shale at elev. about 1000 m a.s.l. Terrestrial herb or undershrub to 0.5 m tall. Flowers white, sometimes with violet tint. Very common.