Northern Vietnam, Lao Cai Prov., Van Ban Distr., to the west of Nam Xay village (21°58′42′'N, 104°00′37′'E). Primary evergreen wet broad-leaved montane forest at elev. 1650 m a.s.l. Tree about 15 m hg. Flowers white with yellow anthers, pleasant fragrant. Usual co-dominant of 2 forest stratum.