Tree 9-25(-30) m tall, 22-58 cm diam. Leaves on older trees eventually becoming wider than thick but distinctly keeled on the upper and lower surfaces, spreading but the upper half curving forwards, uniform in size along the shoot, tapering slightly, 1.5-3 by 0.4-0.8 mm or a little larger on younger trees.
Asia-Tropical, Central Highlands of Papua New Guinea present
Malesia: Central Highlands of Papua New Guinea. .
Not associated with moist habitats like D. steupii, a species which is also associated with disturbed habitats. This latter species differs in the form of the foliage leaves and the involucral leaves.