Vietnam, Thua Thien – Hue Prov., Huong Thuy Distr., Duong Hoa Municipality, Huong Thuy forest enterprise territory, around point 16°13′18′'N, 107°38′04′'E, mountain and hill slopes composed with shale at elevation about 200 m a.s.l.
Fractionally logged primary and secondary closed evergreen broad-leaved forest on steep stream slopes.
Shrub 2-4 m tall in open place along road. Flowers light dull yellowish. Very common.