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Blunting Effect Boring Carving Certified Source Comments Common Names Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Kiln Drying Rate Luster Mortising Moulding Movement in Service Nailing Natural Durability Natural Growth Defects Numerical Data Odor Painting Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Routing & Recessing Sanding Sapwood Color Scientific Name Screwing Staining Steam Bending Strength Properties Synonyms Texture Toxicity Trade Name Tree Identification Tree Size Turning Veneering Qualities Scientific Name Protomegabaria stapfiana Trade Name Agyahere Family Name Euphorbiaceae Synonyms Spondianthus obovatus, Maesobotrya stapfiana Common Names Agyahere, Agyehyele, Asa boguie, Bogboi, Do, Emuinguim, Gbangfoboi, Gbogboi, Mbraoue, Senan, Subite, Wan Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Benin, Cameroon, Equatorial Guinea, Gabon, Ghana, Ivory Coast, Liberia, Nigeria, Sierra Leone, Togo Common Uses Fuelwood, Light construction Environmental Profile Abundant/Secure Heartwood Color Brown Red Yellow Orange Purple Pink Black Yellow to golden-yellow to orange Pale red to pink Pale brown Brown Reddish brown Red Sapwood Color White Yellow Brown Red Green/Grey Pink Grey Different than heartwood Grain Even Straight Figure Rays (figure) Straight Rays figure Texture Coarse Medium Fine Medium Luster Low Medium Slightly lustrous Natural Growth Defects Gum and mineral deposits Brittleheart is often frequent and extensive Natural Durability Very durable Resistant to termites Non-resistant to powder post beetles Durable Susceptible to insect attack Moderately durable Resistant to marine borers Non-resistant to marine borers Susceptible to attack from termites (Isoptera) Perishable Non durable Odor Has an odor Toxicity Some toxic effects Drying Defects Checking Splitting Ease of Drying Fairly Easy Moderately Difficult to Difficult Slowly Reconditioning Treatement Little degrade Kiln Drying Rate Naturally dries slowly Drying rate is slow Slow Naturally dries at a moderate speed Very slow Drying rate is fairly rapid to fast Tree Identification Bole/stem form is buttressed Bole/stem form is not buttressed Tree Size Bole length is 0-10 m Tree height is 10-20 m Sapwood width is 0-5 cm Tree height is 20-30 m Sapwood width is 5-10 cm Bark width is 40-50 mm Trunk diameter is 100-150 cm Certified Source Certified Source Comments General finishing qualities are rated as good Blunting Effect Moderate Little Boring Fairly easy to very easy Fair to good results Carving Fairly Easy to Very Easy Cutting Resistance Easy to saw Fairly Difficult to Very Difficult to saw Moderate to saw Gluing Fairly Easy to Very Easy Fair to Good Results Mortising Fairly Easy to Very Easy Fair to Good Results Very Good to Excellent Results Moulding Fair to Good Results Fairly Easy to Very Easy Very Good to Excellent Results Movement in Service Excellent Stability - Small Movement Nailing Fairly Easy to Very Easy Fair to Good Results Pre-Boring Recommended Very Good to Excellent Results Planing Fairly Easy to Very Easy Fair to Good Results Very Good to Excellent Results Fairly Difficult to Very Difficult Resistance to Impregnation Resistant heartwood Resistant sapwood Permeable sapwood Permeable heartwood Response to Hand Tools Easy to Work Responds Readily Fairly Difficult to Difficult to Work Easy to machine Routing & Recessing Fairly Easy to Very Easy Very Good to Excellent Results Fair to Good Results Sanding Fair to Good Results Fairly Easy to Very Easy Screwing Fairly Easy to Very Easy Pre-boring recommended Very Good to Excellent Results Fair to Good Results Turning Fairly Easy to Very Easy Fair to Good Results Very Good to Excellent Results Veneering Qualities Suitable for peeling Veneers easily Suitable for slicing Veneers moderately easy Steam Bending Fair to Good Results Poor to Very Poor Results Tends to Degrade Painting Very Good to Excellent Results Fair to Good Results Polishing Fair to Good Results Very Good to Excellent Results Fairly Easy to Very Easy Staining Very Good to Excellent Results Fair to Good Results Strength Properties Density (dry weight) = 46-52 lbs/cu. ft. Density (dry weight) = 38-45 lbs/cu. ft. Max. crushing strength = medium Hardness (side grain) = medium Numerical Data Item Green Dry English Density 43 lbs/ft3 Hardness 1658 lbs Maximum Crushing Strength 3916 6397 psi Weight 42 34 lbs/ft3 Item Green Dry Metric Density 689 kg/m3 Hardness 752 kg Maximum Crushing Strength 275 449 kg/cm2 References Cooper, G.P., Record, S.J.,1931,The Evergreen Forests of Liberia,Yale School Forestry Bulletin,31,pp1-153 Erfurth, T., Rusche, H.,1976,The Marketing of Tropical Wood A. Wood Species from African Moist Forests,F.A.O. Forestry Department 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 Kryn, J.M., Forbes, E.W.,1959,The Woods of Liberia,U.S.A. Department of Agriculture,Forest Products Laboratory, Madison,,Report No. 2159 Kunkel, G.,1965,The Trees of Liberia,German Forestry Mission to Liberia Report,No.3 Savill, P.S., Fox, J.E.D.,1967,Trees of Sierra Leone Takahashi, A.,1978,Compilation of Data on the Mechanical Properties of Foreign Woods (Part,III) Africa,Shimane University, Japan, Research Report on Foreign Wood No. 7