FLORA OF VIETNAM Arecaceae Arenga pinnata (Wurmb.) Merr. Vietnam, Thua Thien – Hue Prov., Nam Dong Distr., Huong Son Municipality, around point 16°09′58′'N, 107°36′07′'E.
Fractionally logged primary closed broad-leaved evergreen lowland forest along La Ma River on very steep hill slopes composed with clayey shale and sandstone at elevation 300-400 m a.s.l.
Palm up to 5 m tall with leaves up to 6 m long along rocky stream valley. Locally common. Occasional co-dominant in stream slopes at low elevation.