MUSIZI (Maesopsis eminii)
Nom commercial
Musizi
Nom scientifique (avec auteur)
Maesopsis eminii Engl.
Famille
RHAMNACEAE
Noms communs (pays)
Ndunga (Zaire); N'kanguelé (Gabon); N'kanguelé (Cameroon); Musizi (Uganda); Musizi (Kenya); Onwa; Omuside; Omuhumula; Nsira; Nkangvele; Ndunga; Mutere; Musizi; Muhumula; Mbarika; Igilogbon; Essenge; Esenge; Dzotrubo; Bu-ay-wreh; Awuru; manasati (Côte d`Ivoire); Muhunya (Kenya); Muguruka (Uganda); Muhongera (Uganda); Musira (Tanzania)
Synonymes du nom scientifique (avec auteurs)
Maesopsis berchemioides (Pierre) A. Chev.; Karlea berchemioides Pierre
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 30 to 40 m. The bole is usually straight, clear and cylindrical to 20 m in length, with buttresses or root swellings short and blunt. The trunk diameter attains 130 to 150 cm.
Habitat naturel
Maesopsis eminii is typically a forest-edge species.
Répartition naturelle
Occurs in Western, Central and Eastern Africa along the equator.
Existence de plantations?
Considered as a promising species for plantation. Commonly used for planting in Dem. Rep. of the Congo. The duration of the rotation is 25 years, to reach 50 cm in diameter.
IDENTIFICATION DU BOIS
Description anatomique du bois
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 150 to 200 micras (medium). Non-vestured pits. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel 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. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally septate fibers present. Fibers with simple to minutely bordered pits.
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Vue macroscopique du bois (plan tangentiel)
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Vue microscopique d'une section transversale du bois
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is white, it has a thickness of up to 5 cm. The heartwood is bright yellow-green or green-brown, turning to a pale golden brown on exposure, it is clearly demarcated.
Grain
Straight; grain has no particular influence on drying, machining and finishing qualities.
Texture
The wood is typically coarse in texture.
Luster
The wood surface is moderate in luster.
Durabilité naturelle
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. Moderately resistant to termites attack.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
6
Tensions internes de croissance
For this species no growth stresses are reported.
Teneur en silice
Silica Content: It is reported to have a negligible amount of silica. Contents over 0.05% may affect wood processing. Silica Value: 0.02
Résistance à l'imprégnation
Moderately easy to treat with a partial penetration of the preservative products.
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.48
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.52
Retrait tangentiel total (saturé à 0%TH) (%)
4.9
Retrait radial total (saturé à 0%TH) (%)
3.0
Défauts dus au séchage
Ease of Drying: Drying is moderately difficult to difficult; special care is systematically needed. Drying Defects: Risks of checks and 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.
Calendrier de séchage en séchoir recommandé
FR-7
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.7
Calendrier de séchage en séchoir
http://www.tropicaltimber.info/wp-content/uploads/2015/09/KD_French.pdf
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
768
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
112430
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
411
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
48
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
52
Dureté Janka (latérale) 12%TH (kgf)
336
Dureté Janka (extrémités) 12%TH (kgf)
439
OUVRABILITÉ
Sciage
It is easy to saw.
Coupe de placage de déroulage
Suitable for peeling after heat treatment.
Placage tranche
Suitable for peeling after heat treatment.
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.
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
Needs pre-coating.
Compatibilité avec outils manuels
No particular problems.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
HOUSING GENERAL, boards, frames, panelling, fittings, FURNITURE AND CABINETS, common furniture, PLYWOOD AND VENEER, cores, PACKING, light packing, pallets, OTHER AND MUSICAL INSTRUMENTS, matches, door core, coffin, moldings
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Planches
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Cadres
- 16 - Woods of the World
Panneaux
- 18 - W3TROPICOS Missouri Botanical Garden
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.
Meubles ordinaire
- 23 - Handbook of Hardwoods
PANNEAUX ET PLACAGE
- 25 - Directory of Timber Trade Malaysia
âmes (de placage)
- 27 - Embassy of Brazil in Japan
EMBALLAGE
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Embal_léger
- 46 - ECUADOR, Inventario y Aprovechamiento de los Bosques del Sur Ecuatoriano
Emballage, palettes
- 48 - The strength properties of timbers
Allumette
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
âme_porte
- 76 - Descripción General y Anatómica de 105 Maderas del Grupo Andino.
Cercueils
- 78 - Amazonian Timbers for the International Market
Moulures
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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