Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the S of Na Nheo village (in the vicinity of point 21°59'04''N, 104°15'08''E). Primary closed broad-leaved evergreen submontane forest on steep granite and quartzite slopes of stream canyon at elev. 850-950 m a.s.l. Shrub about 3 m hg. Common.