Tree to 6 m high, with a single trunk or with few branches towards top, with brittle wood. Leaf lamina oblanceolate, (15–) 20–25 (–35) cm long, (4.5–) 6–7 (–9.5) cm broad, narrowed at base, acute to obtuse. Inflorescence with numerous flower clusters; male clusters 15–25 cm long, 4–7-flowered; female clusters stouter, 10–15 cm long, 3-or 4-flowered. Calyx abortive, or a rim in female flowers. Petals broadly triangular, 4 in male flowers, 6 or 7 in female, 1–1.5 mm long, persistent. Stamens 4; anthers c. 0.7 mm long. Ovary flask-shaped, 4–5 mm long, 5–7-locular; styles 5–7, 2 mm long, becoming strongly recurved. Fruit globose, 7–8 mm long, bluntly 5–7-ribbed.
There are relatively few plants, not all in the National Park, scattered in wooded areas and in need of conservation.