BUNDJI (Allanblackia stanerana)
Trade Name
Bundji
Scientific Name
Allanblackia stanerana Exell et Mendonca
Family
CLUSIACEAE
Common Names
Orogbo erin (Nigeria); Izeni (Nigeria); Ouotéra (Côte d`Ivoire); Sangoma (Gabon); Nyonne (Cameroon); Nsangomo (Cameroon); Mbawandjé (Cameroon); Ebungo matatolo (Cameroon); Bianji (Cameroon); Anyoe (Cameroon); Bundji
Description Of The Tree
Botanical Description
The tree reaches a height of 23 m. The bole is straight, cylindrical and unbuttressed, with occasionally swellings on butt. Trunk diameter attains 70 to 80 cm.
Natural Habitat
Allanblackia stanerana grows in dense forests.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Tyloses thin walled. Non-vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits sim Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma in thick bands. Non-crystals in axial parenchyma cells. Crystal sand. 5 to 8 cells per parenchyma strand. Axial parenchyma bands under 4 per mm. 4 to 10 rays per mm (medium). Rays of two distinct sizes. Rays non-storied. Larger rays more than 4 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Non-septate fibers. Fibers with distinctly bordered pits.
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Wood Macro Photo Tangential Plane
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Wood Micro Photo Of Transversal Section
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is white-pink. The heartwood is yellow, it is clearly demarcated.
Grain
Straight; grain has no particular influence on drying, machining and finishing qualities.
Texture
The wood is typically medium in texture.
Luster
Timber of this species is low in luster.
Natural Durability
Not durable; important risks of decay attacks at any processing step, from logs up to final products. It must receive preservative treatment. Heartwood is sensible to Lyctus attacks.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Internal Growth Stresses
No growth stresses are reported in this species.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.61
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.67
Total shrinkage Tangential (Saturated to 0%MC) (%)
8.1
Total shrinkage Radial (Saturated to 0%MC) (%)
3.3
Drying Defects
Ease of Drying: The wood air dries fairly slowly. Boards of 13 mm thick take 3 months to air dry. Drying Defects: There is a moderate risk of cupping and splitting and a high risk of staining during seasoning.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.5
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
982
Stiffness (MOE) 12%MC (kgf/cm²)
137639
Compression parallel to fiber 12%MC (kgf/cm²)
608
Compression perpendicular to fiber 12%MC (kgf/cm²)
80
Janka hardness (side) 12%MC (kgf)
556
Janka hardness (end grain) 12%MC (kgf)
656
Workability
Sawing
It is easy to saw.
Rotary Veneer Cutting
Not suitable for veneering.
Sliced Veneer
Not suitable for veneering.
Blunting Effect
Slight blunting effect; ordinary tools can be used for sawing and machining.
Machining
Machining of this species is reportedly easy.
Planing
Easy; no particular problems.
Moulding
Moderately easy; tools must be cautiously sharpened.
Turning
30
Boring
Moderately easy; tools must be cautiously sharpened.
Mortising
Moderately easy; tools must be cautiously sharpened.
Nailing
No particular problem.
Gluing
Glues well if basic gluing technical rules are followed.
Sanding
Easy to perform; it gives good results.
Polishing
Can be polished without surface preparation.
Response To Hand Tools
No particular problems.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, flooring, parquet, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, TOOLS, agricultural tools, PACKING, OTHER AND MUSICAL INSTRUMENTS, handicrafts, particleboard
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Parquet
- 15 - Empire Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Turning
- 30 - Embassy of Honduras in Japan
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Agricultural Tools
- 44 - Atlas of Peruvian Woods
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Particleboard
- 80 - Estudio Integral de la Madera para Construcción
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