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 m a.s.l. Fractionally logged primary and secondary closed evergreen broad-leaved forest on steep stream slopes. Treelet 3-5 m tall on open rocky place along stream. Flowers white. Not common.