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LONGHI (Gambeya perpulchra)

Trade Name

Longhi

Scientific Name

Gambeya perpulchra Aubrev. et Pellegr.

Family

SAPOTACEAE

Common Names

Daboigui (Guinea); Aningueri rouge (Côte d`Ivoire); Anandio (Côte d`Ivoire); Akatio (Côte d`Ivoire); Bopambu (Zaire); Mbebame (Gabon); Longhi (Congo); Abam (Cameroon)

Scientific Name Synonyms

Chrysophyllum perpulchrum Mildbr. ex Hutch. & Dalz; Chrysophyllum perpulchrum Mildbr. ex Hutch. & Dalz.

Description Of The Tree

Botanical Description

The tree is cylindrical but fluted and thickened at the base. The bole may be up to 20 m in length. The trunk diameter attains 100 cm. Log is banned for international trading.(Cameroon)

Natural Habitat

Gambeya perpulchra occurs in semi-deciduous forests.

Natural Distribution

West, Central and East Africa, from Guinea to Tanzania and to Cameroon.

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). 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 Axial parenchyma in continuous tangential lines or fine bands. Prismatic crystals in short chains in chambered axial parenchyma cells. 5 to 8 cells per parenchyma strand. Axial parenchyma bands over 4 per mm. Rays more than 10 per mm (abundant). Rays non-storied. Rays 1 to 4 seriate. Occasionally silica bodies in the ray cells. Heterogeneous rays and/or multiseriate heterogeneous rays. 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 sapwood is paler than heartwood. The heartwood is pinkish brown to yellow-brown, it is not clearly demarcated. The silver figure is fine (barely visible).

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

4

Grain

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

Texture

Texture of this species is reported to vary from fine to medium.

Luster

This species is low 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 moderately resistant to termites attack.

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

6

Internal Growth Stresses

Residual stresses are reported to be absent.

Resistance To Impregnation

Moderately easy to treat with a partial penetration of the preservative products.

Wood Physical Properties

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

0.73

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

0.82

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

9.6

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

5.9

Drying Defects

Ease of Drying: Drying is slow but without difficulties. Drying Defects: Risks of checks, distortions and collapse. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.

Recommended Dry Kiln Schedule

FR-7

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

1.6

Wood Chemical Properties

Wood Mechanical Properties

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

1376

Stiffness (MOE) 12%MC (kgf/cm²)

178555

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

758

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

108

Shear strength radial 12%MC (kgf/cm²)

83

Janka hardness (side) 12%MC (kgf)

841

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

911

Workability

Sawing

It is moderately 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

Slight blunting effect; ordinary tools can be used for sawing and machining.

Machining

Machining of this species is reportedly easy.

Planing

Moderately easy; tools must be cautiously sharpened.

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

Pre-boring is necessary.

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, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, lasts, OTHER AND MUSICAL INSTRUMENTS, handicrafts

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
Flooring
  • 14 - Handbook of Hardwoods
Parquet
  • 15 - Empire Timbers
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
Knife Handles
  • 33 - Embassy of Gabon in Japan
Lasts
  • 34 - Embassy of Indonesia in Japan
Handcraft
  • 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)

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