Northern Vietnam, Lao Cai Prov., Van Ban Distr., to the west of Nam Xay village (21°58′18′'N, 104°00′24′'E). Primary coniferous (with Fokienia hodginsii) evergreen montane forest at elev. 1700 m a.s.l. Common lithophyte on shady vertical cliffs of mossy granite boulders. Leaves deep green, petiole light pink.