Northern Vietnam, Lao Cai Prov., Van Ban Distr., Khanh Yen Ha municipality, to the SW of Na Nheo village (in the vicinity of point 21ш57'15''N, 104ш12'39''E). Primary broad-leaved evergreen montane forest along tops of granite/quartzite ridge at elev. 2300-2400 m a.s.l. Creeping shrublet on very steep rocky slope. Flowers reddish-brown. Very common.