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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. Blunting Effect Boring Carving Comments Common Names Common Uses Countries of Distribution Cutting Resistance Distribution Overview Drying Defects Ease of Drying Environmental Profile Family Name Gluing Grain Heartwood Color Kiln Drying Rate Luster Mortising Moulding Nailing Natural Durability 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 Silica Content Strength Properties Texture Trade Name Tree Size Turning Varnishing Scientific Name Pachypodanthium confine Trade Name Bohingo Family Name Annonaceae Common Names Bohingo, Ntom Regions of Distribution Africa Countries of Distribution  [VIEW MAP] Cameroon, Gabon Common Uses Balusters, Barge fenders, Boxes and crates, Building construction, Building materials, Casks, Chairs, Chests, Concealed parts (Furniture), Construction, Decorative plywood, Desks, Dining-room furniture, Docks, Dockwork, Domestic flooring, Dowell pins, Dowells, Drawer sides, Excelsior, Fine furniture, Floor lamps, Flooring, Furniture , Furniture components, Furniture squares or stock, Harbor work, Hatracks, Interior construction, Interior trim, Joinery, Kitchen cabinets, Light construction, Living-room suites, Marine construction, Millwork, Mine timbers, Moldings, Naval architecture, Office furniture, Packing cases Environmental Profile Status within its natural growth range has not been officially assessed Distribution Overview The species occurs in Africa, primarily in Cameroon and Gabon. Heartwood Color Brown Red Yellow Pink Orange Green/grey Purple Yellow/Brown Reddish brown The wood occasionally has an olive tinge and stripes Sapwood Color White Yellow Brown Red Not clearly differentiated from the heartwood Grain Even Closed The grain is straight to wavy Texture Fine Fine Even textured Luster Medium Lustrous Natural Durability Moderately durable Resistant to marine borers Susceptible to insect attack Resistant to powder post beetles The timber is immune to attack by termites. Logs should be extracted rapidly from the forest after felling to avoid losses from splitting and attack by insects and fungi. Wood surfaces are reported to require protection against the effects of the weather if the timber is to be used in exterior applications Odor No specific smell or taste Silica Content High Drying Defects Distortion Checking Splitting Ease of Drying Fairly Easy Rapidly Seasons well with little or no degrade Kiln Drying Rate Naturally dries quickly Tree Size Tree height is 20-30 m Bole length is 10-20 m Bark width is 15-20 mm Sapwood width is 0-5 cm Bark width is 10-15 mm Trunk diameter is 100-150 cm Tree height is 30-40 m Trunk diameter is 24 to 36 inches (60 to 90 cm) at maturity Comments The leaf and bark of the tree are reported to contain alkaloids Blunting Effect High to severe Slight blunting effect on cutters Boring Responds very well to boring Bored surfaces are generally smooth Carving Carves well in dry condition Cutting Resistance Fairly easy to saw Gluing Satisfactory gluing properties Mortising Very good mortising characteristics Moulding Good moulding properties Nailing Pre-Boring Recommended Poor to Very Poor Results Fairly Difficult to Very Difficult Satisfactory nailing properties Planing Fair to Good Results Very Good to Excellent Results Easy to plane Resistance to Impregnation Permeable heartwood Permeable sapwood Response to Hand Tools Fairly Difficult to Difficult to Work Works easily with all hand and machine tools Routing & Recessing The material responds readily to boring operations Sanding Easy to sand Sanded surfaces are usually clean and smooth Screwing Satisfactory screwing properties Turning Poor to Very Poor Results The material responds readily to ordinary machine tools in turning operations Painting Takes paint well Polishing Fair to Good Results Poor to Very Poor Results Fairly good polishing characteristics Varnishing Good results Strength Properties Max. crushing strength = very high Compression strength (parallel to grain) = very high The species has very high bending strength, and is much stronger than Teak in the air-dry condition (about 12 percent moisture content). It is stronger than Hard maple, White oak, or Teak Numerical Data Item Green Dry English Bending Strength 10388 16170 psi Maximum Crushing Strength 5194 8820 psi Shearing Strength 2136 psi Stiffness 1764 2019 1000 psi Item Green Dry Metric Bending Strength 730 1136 kg/cm2 Maximum Crushing Strength 365 620 kg/cm2 Shearing Strength 150 kg/cm2 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