N. Vietnam, Thanh Hoa prov., Ba Thuoc distr., Eo Dieu municipality, territory of Pu Luong protected area, near Eo Dieu village (20°25′48′'N, 105°14′13′'E). Primary wet broad-leaved evergreen forest on very steep slopes of remnant highly eroded karst limestone ridge at elev. 600-700 m a.s.l. Terrestrial herb, inflorescence up to 0.6 m. Inflorescence and leaf stalk light brown with round white spots. Spathe green with white spots at the base. Flowers and axis of inflorescence white. Occasional at 600 m a.s.l.