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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. Common Names Common Uses Countries of Distribution Cutting Resistance Family Name Gluing Grain Heartwood Color Kiln Schedules Luster Movement in Service Nailing Natural Durability Numerical Data Planing Polishing References Regions of Distribution Resistance to Impregnation Response to Hand Tools Sapwood Color Scientific Name Strength Properties Texture Trade Name Tree Identification Scientific Name Discoglypremna caloneura Trade Name Akikagba Family Name Euphorbiaceae Common Names Akikagba, Akoret, Apohia, Athieghe, Atieghe, Bovui-hini, Dein, Dibimbi, Dubrafo, Fetaferai, Gbovui-hini, Hotoro, Hotorohotoro, Leh-bohn, Nanomanamedua, Nnomanamegyama, Nomanoma-gyama, Obinwanyi, Ofreh-tefreh, Ofretetre, Okpaghegui, Okpaigwi, Shokushogwo, Uguaomaifian, Uguomafia, Uguomaiton Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Congo, Gabon, Guinea, Ivory Coast, Liberia, Nigeria, Uganda, Zaire Common Uses Boat building (general), Boxes and crates, Cabinetmaking, Carvings, Flooring, Food containers, Furniture, Joinery, Light construction, Matches, Millwork, Particleboard, Plywood, Poles, Posts, Pulp/Paper products, Turnery, Vehicle parts Heartwood Color Brown Yellow to golden-yellow to orange White to cream Pale brown Sapwood Color White to yellow Grain Even Straight Figure Distinct (figure) Straight Distinct figure Texture Medium Fine Coarse Luster Medium Natural Durability Durable Sapwood is susceptible to wood staining fungal attack Non durable Susceptible to marine borer attack Susceptible to attack from termites (Isoptera) Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Perishable Kiln Schedules Drying (speed) is fast Tree Identification Bole/stem form is not buttressed Bole/stem form is buttressed Bole/stem form is straight Bole/stem form is fluted Bole/stem form is cylindrical Cutting Resistance Cutting Resistance with dry wood is easy Gluing Easy to glue Movement in Service Medium Nailing Easy to nail Planing Planes well, to a good finish Easy to plane Resistance to Impregnation Sapwood is permeable Heartwood is resistant Response to Hand Tools Easy to Work Fairly Difficult to Difficult to Work Easy to machine Polishing Fair to Good Results Very Good to Excellent Results Strength Properties Shrinkage, Tangential = moderate Bending strength (MOR) = low Modulus of Elasticity (stiffness) = very low Max. crushing strength = low Shrinkage, Volumetric = moderate Shrinkage, Tangential = small Shrinkage, Tangential = large Shrinkage, Tangential = fairly large Shrinkage, Radial = very small Shrinkage, Radial = small Shrinkage, Radial = large Shrinkage, Radial = fairly large Max. crushing strength = medium Hardness (side grain) = very soft Shrinkage, Volumetric = small Shrinkage, Radial = moderate Shearing strength (parallel to grain) = very low Density (dry weight) = 23-30 lbs/cu. ft. Density (dry weight) = 15-22 lbs/cu. ft. Numerical Data Item Green Dry English Bending Strength 6111 9589 psi Density 22 lbs/ft3 Hardness 319 lbs Maximum Crushing Strength 2850 4909 psi Shearing Strength 882 psi Stiffness 1017 1199 1000 psi Weight 22 18 lbs/ft3 Radial Shrinkage 4 % Tangential Shrinkage 8 % Volumetric Shrinkage 10 % Item Green Dry Metric Bending Strength 429 674 kg/cm2 Density 352 kg/m3 Hardness 144 kg Maximum Crushing Strength 200 345 kg/cm2 Shearing Strength 62 kg/cm2 Stiffness 71 84 1000 kg/cm2 Weight 352 288 kg/m3 Radial Shrinkage 4 % Tangential Shrinkage 8 % References Bolza, E., Keating, W.G.,1972,African Timbers - the Properties, Uses and Characteristics of 700 Species,C.S.I.R.O. Div. of Building Research Cooper, G.P., Record, S.J.,1931,The Evergreen Forests of Liberia,Yale School Forestry Bulletin,31,pp1-153 Fouarge, J., Gerard, G.,1964,Bois du Mayumbe,I.N.E.A.C. Belguim Hedin, L.,1930,Etude sur la Foret et les Bois du Cameroun,Haut-Commissaire de la Cameroun Irvine, F.R.,1961,Woody Plants of Ghana,O.U.P. London Keay, R.W.J.,1964,Nigerian Trees Vol.2,Nigeria Federal Department of Forest Research, Ibadan Sallenave, P.,1955,Proprietes Phyiques et Mecaniques des Bois Tropicaux de l'Union Francaise,C.T.F.T Sallenave, P.,1971,Proprietes Physiques et Mecaniques des Bois Tropicaux (Deuxieme,Supplement,C.T.F.T. 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 Taylor, C.J.,1960,Synecology and Silviculture in Ghana,University College of Ghana Thomas Nelson and Sons