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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 Common Uses Countries of Distribution Cutting Resistance Drying Defects Ease of Drying Family Name Gluing Grain Heartwood Color Kiln Schedules Luster Nailing Natural Durability Numerical Data Planing Polishing References Regions of Distribution Response to Hand Tools Sapwood Color Scientific Name Strength Properties Synonyms Texture Toxicity Trade Name Tree Identification Tree Size Scientific Name Macoubea guianensis Trade Name Amapa doce Family Name Apocynaceae Synonyms Tabernaemontana paucifolia Common Names Amapa doce, Huapa-caspi, Juapa-caspi, Liekapatoe, Mapa, Mappa, Molongo, Rokko-rokko, Roko-roko, Rokoroko, Sokko sokka, Sokko sokko, Yacosanango Regions of Distribution Latin America Countries of Distribution  [VIEW MAP] Brazil, French Guiana, Peru, Suriname Common Uses Boxes and crates, Food containers, Furniture, Joinery, Light construction, Matches, Mathematical instruments, Millwork, Plywood corestock, Plywood, Veneer Heartwood Color Brown Yellow to golden-yellow to orange Pale brown Sapwood Color White to yellow Grain Straight Even Figure Weak (figure) Texture Medium Fine Luster Lustrous Natural Durability Very durable Perishable Non durable Susceptible to attack from termites (Isoptera) Susceptible to attack from powder post (Lyctid & Bostrychid) beetles Toxicity Dermatitic effects Kiln Schedules Drying (speed) is fast Drying Defects Slight twist/warp Slight surface checking Slight spring/bow Slight end splitting No twisting or warping No cupping, generally Moderate spring/bow Ease of Drying Moderate Difficult Tree Identification Bole/stem form is not buttressed Tree Size Tree height is 20-30 m Bole length is 10-20 m Comments General finishing qualities are rated as good Boring Easy Cutting Resistance Cutting Resistance with dry wood is easy Gluing Easy to glue Nailing Easy to nail Planing Planes well, to a good finish Easy to plane Response to Hand Tools Fairly Difficult to Difficult to Work Easy to machine Polishing Satisfactory results Strength Properties Density (dry weight) = 23-30 lbs/cu. ft. Shrinkage, Radial = very small Shrinkage, Tangential = very small Shrinkage, Tangential = small Shrinkage, Tangential = moderate Shrinkage, Radial = small Shearing strength (parallel to grain) = very low Hardness (side grain) = very soft Density (dry weight) = 31-37 lbs/cu. ft. Bending strength (MOR) = high Shrinkage, Volumetric = small Shrinkage, Tangential = fairly large Shrinkage, Radial = moderate Modulus of Elasticity (stiffness) = very low Modulus of Elasticity (stiffness) = low Max. crushing strength = medium Max. crushing strength = low Numerical Data Item Green Dry English Bending Strength 13576 20956 psi Density 26 lbs/ft3 Hardness 319 lbs Maximum Crushing Strength 3027 5157 psi Shearing Strength 882 psi Stiffness 1188 1383 1000 psi Weight 25 23 lbs/ft3 Radial Shrinkage 3 % Tangential Shrinkage 6 % Volumetric Shrinkage 8 % Item Green Dry Metric Bending Strength 954 1473 kg/cm2 Density 416 kg/m3 Hardness 144 kg Maximum Crushing Strength 212 362 kg/cm2 Shearing Strength 62 kg/cm2 Stiffness 83 97 1000 kg/cm2 Weight 400 368 kg/m3 Radial Shrinkage 3 % Tangential Shrinkage 6 % References Berni, C.A., Bolza, E., Christensen, F.J.,1979,South American Timbers - The Characteristics, Properties and Uses of 190,Species,C.S.I.R.O Div. Building Research Fanshawe, D.B.,1954,Forest Products of British Guiana Part 1 Principal Timbers,Forest Department British Guiana Forestry Bulletin (New Series 2nd,Edition,No.1 Record, S.J., Hess, R.W.,1943,Timbers of the New World,Yale University Press Surinam Forest Service,1952,Surinam Timber - A Summary with brief descriptions of the main timber,species of Surinam,Surinam Forest Service Wangaard, F.F., W.L. Stern, and S.L. Goodrich. 1955. Tropical Woods - Properties and Uses of Tropical Woods, Volume V, No. 103. School of Forestry, Yale University, New Haven, Connecticut. Wood, B., Calnan, D.,1976,Toxic Woods,British Journal of Dermat 94 Suppl. 13