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 up to 1.5 m tall on mossy wet stream rocks along rocky stream valley. Syconia green. Very common. Occasional co-dominant of riparian lithophytic communities.