USDA Forest Service
Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53705-2398
Wood Technical Fact Sheet
Other Common Names: Inoi (Nigeria), Ngale (Cameroon), Ovoga, Afo (Gabon).
Distribution: Distributed from Nigeria to the Congo region in the dense equatorial forests, often along riverbanks and coastland.
The Tree: May reach a height of 150 ft; bole straight and cylindrical, 50 to 60 ft in length; trunk diameter to 4 ft.
The Wood: General Characteristics: Heartwood pink red or pink buff; sapwood whitish with pink stripes, well differentiated. Texture coarse; grain interlocked or variable, has a "silver grain" figure when quartersawn due to broad rays.
Weight: Basic specific gravity (ovendry weight/green volume) 0.36; air-dry density 27 pcf.
Mechanical Properties: (2-cm standard)
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
12% (44) 9,050 940 5,250
12% (46) 9,800 1,040 5,550
Amsler toughness 67 to 160 in.-lb at 12% moisture content (2-cm specimen).
Drying and Shrinkage: Dries with little difficulty, not prone to warp if quartersawn. No information on kiln schedules. Shrinkage green to ovendry: radial 2.8%; tangential 8.0%; volumetric 13.1%.
Working Properties: Works easily with hand and machine tools, takes a smooth finish, peels and slices well, satisfactory gluing, takes nails and screws easily.
Durability: Wood is not durable, prone to termite attack, poor weathering characteristics.
Preservation: No information.
Uses: Decorative veneers, furniture components, boxes and crates, general woodworking, joinery. Tree produces edible nuts with a high oil content.
Additional Reading: (3), (44), (46)