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OWUI (Hexalobus crispiflorus)
Nom commercial
Owui
Nom scientifique (avec auteur)
Hexalobus crispiflorus A.Rich.
Famille
ANNONACEAE
Noms communs (pays)
Lapawe (Nigeria); Siéléké (Côte d`Ivoire); Owui (Gabon); Mossome (Central African Republic); Owe (Cameroon); Leoué (Cameroon); Chungé (Cameroon)
Synonymes du nom scientifique (avec auteurs)
Hexalobus salicifolius Engl.; Hexalobus mbula Exell; Hexalobus lujae De Wild.; Hexalobus grandiflorus Benth.
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 20 to 30 m. The bole is fluted, often buttressed to a height of 1.7 m. The bole may occasionally be up to 20 m in length. The trunk diameter attains 70 up to 150 cm.
Habitat naturel
Hexalobus crispiflorus occurs in deciduous and fringing forests, along river-flats and in the savanna zones of the Guineas.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 micras or less (very small). Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to interv Axial parenchyma scalariform. Non-crystals in axial parenchyma cells. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays non-storied. Larger rays more than 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The heartwood is brown, pink or pale yellow, it is not clearly demarcated. Stripy figure on the quarter-cut and back sawn faces.
Grain
Straight; grain has no particular influence on drying, machining and finishing qualities.
Texture
Fine texture is reported in this species.
Luster
This species is high in luster.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
4
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.50
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.55
Défauts dus au séchage
Ease of Drying: Drying is very slow and difficult to perform; defects are frequent. Drying Defects: Risks of distortions. Kiln Schedules: Schedule proposed as a reference by comparison with well known species taking into account to the general technological behavior of this species.
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
781
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
131445
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
511
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
64
Dureté Janka (latérale) 12%TH (kgf)
365
Dureté Janka (extrémités) 12%TH (kgf)
469
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Not suitable for veneering.
Placage tranche
Not suitable for veneering.
Effet d'émoussement
Slight blunting effect; ordinary tools can be used for sawing and machining.
Usinage
Machining of this species is reportedly easy.
Rabotage
Easy; no particular problems.
Moulurage
Moderately easy; tools must be cautiously sharpened.
Tournage
30
Perçage
Moderately easy; tools must be cautiously sharpened.
Mortaisage
Moderately easy; tools must be cautiously sharpened.
Clouage
No particular problem.
Collage
Glues well if basic gluing technical rules are followed.
Ponçage
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, flooring, parquet, fittings, FURNITURE AND CABINETS, cabinets, TURNING, SPORTS, TOOLS, tool handles, agricultural tools, PACKING, CONTAINERS, cooperage, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts, particleboard, paper
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Planchers
- 14 - Handbook of Hardwoods
Parquets
- 15 - Empire Timbers
Accessoires en bois
- 19 - Silica in Timbers
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Armoires
- 24 - Empire Timbers
Tournage
- 30 - Embassy of Honduras in Japan
SPORTS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
OUTILS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Outils_manches
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Outils_agric
- 44 - Atlas of Peruvian Woods
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
CONTENANTS
- 50 - Properties of imported tropical woods
Tonnellerie
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Carros_camion
- 53 - Timbers of the New World
Wagons
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCTION NAVALE
- 55 - Tropical Timber Atlas of Latin America
Navires
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
Artisanat
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Panneaux de particules
- 80 - Estudio Integral de la Madera para Construcción
Papier
- 82 - Compilation of Data on the Mechanical Properties of Foreign woods (Part 2) Central and South America.
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