Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the N of Na Nheo village (in the vicinity of point 21°59′12′'N, 104°15′49′'E). Remnants of primary broad-leaved evergreen submontane forest on granite and quartzite along river at elev. 700 m a.s.l. Tree up to 15 m hg Flowers dull yellow. Common.