Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the SW of Na Nheo village (in the vicinity of point 21°57′26′'N, 104°13′00′'E). Primary evergreen broad-leaved montane forest with Fokienia hodginsii along granite/quartzite ridge at elev. 2200 m a.s.l. Terrestrial herb on very steep rocky slopes. Flowers white, fragrant. Common.