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ELO (Xylopia quintasii)
Nom commercial
Elo
Nom scientifique (avec auteur)
Xylopia quintasii Engl. et Diels
Famille
ANNONACEAE
Noms communs (pays)
M'voma (Gabon); M'ban (Gabon); Kendjou (Gabon); Omvomba (Cameroon); Mvomba (Cameroon); Mvengba (Cameroon); Waba; Udaofia; Palufon; Ovunien; Opalifon; Oba; Mvomba; Kpaini; Kaba; Gbay-dee; Gbay; Gbanyi; Brala; Bolonge; Asimma; Asimba; Aghako; Elo
Synonymes du nom scientifique (avec auteurs)
Xylopia striata Engl.; Xylopia lane-poolei Sprague & Hutch.; Polyalthia mayumbensis Exell
DESCRIPTION DE L'ARBRE
Description botanique
The tree reaches a height of 30 m. The bole is clean and straight, generally fluted at the base with short buttresses. The trunk diameter attains 70 to 100 cm.
Habitat naturel
Xylopia quintasii occurs in evergreen and deciduous forests and in coastal thickets.
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 Axial parenchyma in continuous tangential lines or fine bands. Non-crystals in axial parenchyma cells. 3 to 4 cells per parenchyma strand. Axial parenchyma in narrow bands on lines up to 3 cells wide. Axial parenchyma bands over 4 per mm. 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). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilité
Statut CITES
Unrestricted
DESCRIPTION GÉNÉRALE DU BOIS
Teinte
The sapwood is paler than the heartwood. The heartwood is yellow or brown, it is clearly demarcated.
Grain
Straight; grain has no particular influence on drying, machining and finishing qualities.
Texture
This wood has a somewhat fine texture.
Luster
The wood luster is reported to be rather low.
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. Resistant to termites attack.
Index de durabilité naturelle (1 = Très élevée, 7 = Très faible)
6
PROPRIÉTÉS PHYSIQUES DU BOIS
Densité basale ou gravité spécifique (poids anhydre/vol. saturé) (g/cm³)
0.74
Densité sèche à l'air (poids et volume à 12%TH) (g/cm³)
0.84
Retrait tangentiel total (saturé à 0%TH) (%)
9.4
Retrait radial total (saturé à 0%TH) (%)
6.0
Défauts dus au séchage
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.
Ratio de stabilité dimensionnelle (% retrait tangentiel total/% retrait radial total)
1.6
PROPRIÉTÉS CHIMIQUES DU BOIS
PROPRIÉTÉS MÉCANIQUES DU BOIS
Résistance à la flexion (module de rupture_MOR) 12%TH (kgf/cm²)
1441
Rigidité (module d'élasticité_ MOE) 12%TH (kgf/cm²)
188477
Résistance à la compression parallèle à la fibre 12%TH (kgf/cm²)
749
Résistance à la compression perpendiculaire à la fibre 12%TH (kgf/cm²)
106
Résistance au cisaillement (radial) 12%TH (kgf/cm²)
109
Dureté Janka (latérale) 12%TH (kgf)
883
Dureté Janka (extrémités) 12%TH (kgf)
947
OUVRABILITÉ
Sciage
Sawing of this species requires powerful equipment.
Coupe de placage de déroulage
Not suitable for veneering.
Placage tranche
Not suitable for veneering.
Usinage
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Rabotage
Moderately easy; tools must be cautiously sharpened.
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
Pre-boring is necessary.
Collage
Difficult to glue because of high density.
Ponçage
Easy to perform; it gives good results.
Polissage
Can be polished without surface preparation.
Compatibilité avec outils manuels
Working with hand tools is difficult.
UTILISATIONS
UTILISATIONS FINALES (RÉSUMÉ)
EXTERIOR GENERAL, poles, stakes posts, crossties, HOUSING GENERAL, parquet, FURNITURE AND CABINETS, TURNING, SPORTS, TOOLS, tool handles, agricultural tools, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, boats, OTHER AND MUSICAL INSTRUMENTS, handicrafts, scale model
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Poteaux
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Piquets
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Traverses de chemin de fer
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
MEUBLES ET M. DE RANGEMENT
- 10 - Silica in Timbers
Parquets
- 15 - Empire Timbers
MEUBLES ET M. DE RANGEMENT
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
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
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.)
Maquettes
- 83 - Algunas caracteristicas fisicomecanicas de la madera de tres especies de la cordillera NeoVolcanica
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