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ANIéGRé (Gambeyobotrys gigantea)

Trade Name

Aniégré

Scientific Name

Gambeyobotrys gigantea Aubrev.

Family

SAPOTACEAE

Common Names

Koanandio (Côte d`Ivoire); Nom abam (Cameroon); Njuri (Cameroon); Njoli (Cameroon); Aningré

Scientific Name Synonyms

Gambeya gigantea (A. Chev.) Aubrev. & Pellegr.; Chrysophyllum giganteum A. Chev.

Description Of The Tree

Botanical Description

The tree reaches a height of more than 50 m with a straight cylindrical bole to 26 m in length. The trunk diameter attains 100 to 120 cm above the tall, symmetrical buttresses.

Natural Habitat

Natural Distribution

The genus is widespread in tropical Africa, particularly common in parts of East Africa.

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Vessels in radial multiples of 2 to 4. Tangential diameter of vessel lumina 100 to 150 micras (small). Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits coarse in marginal rows. Intervessel pi Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma in continuous tangential lines or fine bands. Crystal sand in axial parenchyma cells. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 4 seriate. Non-septate fibers. Fibers with simple to minutely bordered pits.

  • Wood Macro Photo Tangential Plane
  • Wood Micro Photo Of Transversal Section

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is yellowish white to pale brown or pinkish brown, it is not clearly demarcated.

COLOR INDEX (1=Black, 7=Light yellow,white)

6

Grain

Straight or slightly interlocked, sometimes with an influence on further processing operations.

Texture

The texture varies from fine to medium.

Luster

The wood is described as moderate in luster.

Natural Durability

Slightly durable to decay. This species needs preservative treatment for uses with risks of occasional re-humidification. It is not suited for uses with risks of permanent or long-lasting humidification. The heartwood is sensible to termites and Lyctus attack.

Natural durability index (1= Very high durability, 7=Vey low durability)

6

Internal Growth Stresses

Residual stresses are reported to be absent.

Silica Content

Silica Content: Negligible content of silica is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0.01

Resistance To Impregnation

Easy to treat with a full penetration of the preservative products using vacuum-pressure method.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.51

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.55

Total shrinkage Tangential (Saturated to 0%MC) (%)

6.9

Total shrinkage Radial (Saturated to 0%MC) (%)

3.8

Drying Defects

Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of distortions.

Recommended Dry Kiln Schedule

FR-4

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

1.8

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

860

Stiffness (MOE) 12%MC (kgf/cm²)

124413

Compression parallel to fiber 12%MC (kgf/cm²)

472

Compression perpendicular to fiber 12%MC (kgf/cm²)

57

Shear strength radial 12%MC (kgf/cm²)

59

Janka hardness (side) 12%MC (kgf)

376

Janka hardness (end grain) 12%MC (kgf)

480

Workability

Sawing

It is easy to saw.

Rotary Veneer Cutting

Suitable for slicing, also suitable for peeling if treated.

Sliced Veneer

Suitable for slicing, also suitable for peeling if treated.

Blunting Effect

Severe blunting effect; stellited blades for sawing and carbide tools for machining are recommended.

Machining

Possible difficulties caused by interlocked grain are reported.

Planing

Easy; no particular problems.

Moulding

Easy; no particular problems.

Turning

30

Boring

Easy; no particular problems.

Mortising

Easy; no particular problems.

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, beams, joists, boards, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, OTHER AND MUSICAL INSTRUMENTS, moldings

General Housing
  • 10 - Silica in Timbers
Beams
  • 11 - Prospect: The wood database
Joists
  • 12 - Tropical timbers of the world. Part I-Tropical American Species
Boards
  • 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Frames
  • 16 - Woods of the World
Steps
  • 17 - Tree Conservation Database
Paneling
  • 18 - W3TROPICOS Missouri Botanical Garden
Fittings
  • 19 - Silica in Timbers
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Luxury
  • 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Cabinet
  • 24 - Empire Timbers
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Faces
  • 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Decorative veneer
  • 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Turning
  • 30 - Embassy of Honduras in Japan
Ornaments
  • 31 - Embassy of Colombia in Japan
Turned Articles
  • 32 - Embassy of Cote d`Ivoire in Japan
Molding
  • 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão

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