New Guinea Walnut (Dracontomelon mangiferum) Common Name(s): New Guinea Walnut Scientific Name: Dracontomelon mangiferum Distribution: Southeast Asia Tree Size: 100-120 ft (30-37 m) tall, 5-7 ft (1.5-2.1 m) trunk diameter Average Dried Weight: 39 lbs/ft3 (625 kg/m3