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ODOUMA (Gossweilerodendron joveri)
Trade Name
Odouma
Scientific Name
Gossweilerodendron joveri Normand et Aubrev.
Family
LEGUMINOSAE
Common Names
Oduma (Gabon); Oduma (Equatorial Guinea); Oduma (Cameroon)
Scientific Name Synonyms
Prioria joveri (Normand ex Aubrev.) Breteler
Description Of The Tree
Botanical Description
The tree is cylindrical and unbuttressed. The bole is straight and may be up to 30 m in length. The trunk diameter can be up to 250 cm.
Natural Habitat
Gossweilerodendron joveri mainly occurs in semi-deciduous forest, occasionally present in evergreen forests.
Natural Distribution
West Africa, from Cameroon to Gabon.
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). Vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand 4 to 10 rays per mm (medium). Rays non-storied. Rays 1 to 4 seriate. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Non-septate fibers. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is whitish (yellow resin), it has a thickness of 10 cm. The heartwood is pinkish yellow-brown, darkening on exposure, it is not clearly demarcated. The silver figure is fine.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
Straight or slightly interlocked, sometimes with an influence on further processing operations.
Texture
Fine texture is reported in this species.
Luster
The wood luster is reported to be rather moderate.
Natural Durability
Because of its variable resistance it is considered as moderately durable to decay. Without treatment, it can be used when risks of occasional re-humidification; it is not suited for uses with risks of permanent or long-lasting humidification. Sensible to
Natural durability index (1= Very high durability, 7=Vey low durability)
4
Internal Growth Stresses
No residual stresses are reported in this species.
Resistance To Impregnation
Difficult to treat with only a low penetration of the preservative products.
Wood Physical Properties
Drying Defects
Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: No particular risks of drying defects, subject to normal drying conditions. 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-1
Wood Chemical Properties
Wood Mechanical Properties
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
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.
Boring
Moderately easy; tools must be cautiously sharpened.
Mortising
Moderately easy; tools must be cautiously sharpened.
Nailing
No particular problem.
Gluing
Difficult to glue because of the extracts content.
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
EXTERIOR GENERAL, rails, HOUSING GENERAL, beams, joists, boards, frames, steps, panelling, shutter boards, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, faces, cores, common veneer, PACKING, heavy packing, pallets, NAVAL CONSTRUCTION, boat deck, port storage, OTHER AND MUSICAL INSTRUMENTS, door core, shingle, coffin, moldings
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Rails
- 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
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
Shutter Boards
- 20 - Prospect: The wood database
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Common
- 23 - Handbook of Hardwoods
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Faces
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Cores
- 27 - Embassy of Brazil in Japan
Common Veneer
- 29 - Embassy of Ecuador in Japan
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Heavy Packing
- 47 - Arvores Brasileiras
Pallets
- 48 - The strength properties of timbers
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boat Decking
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Port Storage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
Door Cores
- 76 - Descripción General y Anatómica de 105 Maderas del Grupo Andino.
Shingles
- 77 - Amazonian Timbers, Characteristics and Utilization Volume I; Tapajós National Forest
Coffin
- 78 - Amazonian Timbers for the International Market
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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