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Clicking any heading in the main data area (at right) will scroll the page back to this top position. Use the following links to jump to the associated section in the main data. Boring Comments Common Names Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Luster Mortising Moulding Nailing Natural Durability Numerical Data Odor Painting Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sanding Sapwood Color Scientific Name Screwing Staining Steam Bending Strength Properties Synonyms Texture Trade Name Tree Size Turning Veneering Qualities Scientific Name Polyalthia oliveri Trade Name Duabiri Family Name Annonaceae Synonyms Artabotrys oliveri Common Names Duabiri, Pe-ohn Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Benin, Cameroon, Gabon, Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone, Tanzania, Togo Environmental Profile Rare Heartwood Color White Brown Green/grey Red Grey Yellow to golden-yellow to orange Brown Sapwood Color White Yellow Red Brown Grain Even Figure Straight Distinct (figure) Stripe (figure) Striped figure Straight Distinct figure Texture Fine Coarse Even or uniform Medium Medium Luster Low Lustrous Natural Durability Non-durable Moderately durable Perishable Non-resistant to powder post beetles Susceptible to insect attack Odor Has an odor Drying Defects Distortion Internal Honeycombing Possible Collapse Uneven Moisture Content Moderate surface checking Ease of Drying Moderately Difficult to Difficult Fairly Easy Thick Stock Requires Care Variable Tree Size Tree height is 20-30 m Trunk diameter is 100-150 cm Tree height is 30-40 m Tree height is 50-60 m Tree height is 60-70 m Tree height is 10-20 m Comments General finishing qualities are rated as good Boring Fairly easy to very easy Fair to good results Cutting Resistance Easy to saw Gluing Fairly Easy to Very Easy Very Good to Excellent Results Mortising Poor to Very Poor Results Fairly Difficult to Very Difficult Moulding Poor to Very Poor Results Fairly Difficult to Very Difficult Nailing Poor to Very Poor Results Fair to Good Results Very Good to Excellent Results Fairly Easy to Very Easy Planing Fair to Good Results Fairly Easy to Very Easy Resistance to Impregnation Resistant heartwood Resistant sapwood Response to Hand Tools Easy to Work Fairly Difficult to Difficult to Work Easy to machine Sanding Fairly Difficult to Very Difficult Poor to Very Poor Results Screwing Fair to Good Results Fairly Easy to Very Easy Poor to Very Poor Results Very Good to Excellent Results Turning Fair to Good Results Fairly Easy to Very Easy Very Good to Excellent Results Veneering Qualities Suitable for peeling Veneers easily Veneers moderately easy Difficult to veneer Steam Bending Fair to Good Results Fairly Easy to Very Easy Painting Fair to Good Results Very Good to Excellent Results Fairly Easy to Very Easy Polishing Very Good to Excellent Results Fair to Good Results Staining Fair to Good Results Strength Properties Modulus of Elasticity (stiffness) = high Bending strength (MOR) = high Numerical Data Item Green Dry English Bending Strength 13576 20956 psi Stiffness 2167 2494 1000 psi Item Green Dry Metric Bending Strength 954 1473 kg/cm2 References Cooper, G.P., Record, S.J.,1931,The Evergreen Forests of Liberia,Yale School Forestry Bulletin,31,pp1-153 Irvine, F.R.,1961,Woody Plants of Ghana,O.U.P. London Keay, R.W.J., et al,1960,Nigerian Trees Vol.1,Nigeria Federal Department of Forest Research, Ibadan