Vietnam, Thua Thien – Hue Prov., Huong Thuy Distr., Duong Hoa Municipality, Huong Thuy forest enterprise territory, around point 16°12′50′'N, 107°36′29′'E, mountain and hill slopes composed with shale at elevation about 200-250 m a.s.l.
Fractionally logged primary and secondary closed evergreen broad-leaved forest on steep stream slopes.
Undershrub 1.5-2 m tall on shady wet slope. Flowers lemon yellow. Not common.