Other Common Names: Wonton (Ghana), Aye (Nigeria), Kankate (Zaire).
Distribution: Found on the edge of the humid rain forests from Senegal to Cameroon and Gabon; also in dry savanna formations. Widely planted as a shade and farm boundary tree.
The Tree: Reaches a height of 90 to 120 ft, bole straight, cylindrical, about 60 ft in length; trunk diameter 2 to 3 ft, wide-spreading root ridges.
General Characteristics: Heartwood yellow when freshly cut darkening on exposure to a golden- or coffee brown; sapwood wide, grayish white, distinct. Texture fine to moderately coarse; grain shallowly interlocked; moderately high luster.
Weight: Basic specific gravity (ovendry weight/green volume) 0.70; air-dry density 54 pcf.
Mechanical Properties: (2-cm standard)
Moisture content Bending strength Modulus of elasticity Maximum crushing strength
(%) (Psi) (1,000 psi) (Psi)
12% (46) 24,000 2,260 12,800
Amsler toughness 234 in.-lb at 12% moisture content (2-cm specimen).
Drying and Shrinkage: Reported to have satisfactory seasoning characteristics. No information on kiln schedules. Shrinkage green to ovendry: radial 3.3%; tangential 5.8%; volumetric 8.0%. Reported to be rather stable when manufactured.
Working Properties: Works with moderate ease with most hand and machine tools, good sawing characteristics; glues well; takes a good finish; veneers well.
Durability: Heartwood vulnerable to attack by decay fungi and liable to termite attack.
Preservation:Heartwood extremely resistant to treatment; sapwood is moderately resistant.
Uses: Joinery, turnery, flooring, veneer.
Additional Reading: (3), (10), (46)
3. Bolza, E., and W. G. Keating. 1972. African timbers-the properties, uses, and characteristics of 700 species. CSIRO. Div. of Build. Res., Melbourne, Australia.
10. France: Bois For. Trop. 1951. Difou (Morus mezozgia). Bois For. Trop. 18/19:143-146.
46.Sallenave, P. 1964. Proprietes physiques et mecaniques des bois tropicaux. Premier Supplement. Centre Tech. For. Trop. No. 23.
From: Chudnoff, Martin. 1984. Tropical Timbers of the World. USDA Forest Service. Ag. Handbook No. 607.