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ELO (Xylopia quintasii)
Nombre comercial
Elo
Nombre científico (con autor)
Xylopia quintasii Engl. et Diels
Familia
ANNONACEAE
Nombres Comunes
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
Nombres científicos sinónimos (con autores)
Xylopia striata Engl.; Xylopia lane-poolei Sprague & Hutch.; Polyalthia mayumbensis Exell
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
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.
Hábitat natural
Xylopia quintasii occurs in evergreen and deciduous forests and in coastal thickets.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
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.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Color
The sapwood is paler than the heartwood. The heartwood is yellow or brown, it is clearly demarcated.
Grano
Straight; grain has no particular influence on drying, machining and finishing qualities.
Veta
This wood has a somewhat fine texture.
Brillo
The wood luster is reported to be rather low.
Durabilidad Natural
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.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
6
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.74
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.84
Contracción Tangencial Total (Saturado hasta anhidro) (%)
9.4
Contracción Radial Total (Saturado hasta anhidro) (%)
6.0
Defectos por secado
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.
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.6
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1441
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
188477
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
749
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
106
Cizallamiento radial CH12% (kgf/cm²)
109
Dureza Janka (lados) CH12% (kgf)
883
Dureza Janka (extremos) CH12% (kgf)
947
TRABAJABILIDAD
Aserrado
Sawing of this species requires powerful equipment.
Corte de chapa rotativa
Not suitable for veneering.
Chapa tranchada
Not suitable for veneering.
Maquinado general
It needs powerful tools for processing. Possible difficulties caused by interlocked grain are reported.
Cepillado
Moderately easy; tools must be cautiously sharpened.
Moldurado
Moderately easy; tools must be cautiously sharpened.
Torneado
30
Taladrado
Moderately easy; tools must be cautiously sharpened.
Escopleado, caja y espiga
Moderately easy; tools must be cautiously sharpened.
Clavado
Pre-boring is necessary.
Encolado
Difficult to glue because of high density.
Lijado
Easy to perform; it gives good results.
Sacar lustre
Can be polished without surface preparation.
Facilidad para herramientas manuales
Working with hand tools is difficult.
Usos Reportados
USOS FINALES (RESUMEN)
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
Postes de transmisión
- 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Postes cerca
- 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Durmientes
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
VIVIENDA GENERAL
- 10 - Silica in Timbers
Parquet
- 15 - Empire Timbers
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Torneado
- 30 - Embassy of Honduras in Japan
IMPLEMENTOS DEPORTIVOS
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
HERRAMIENTAS
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Mangos herramientas
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Mangos agrícolas
- 44 - Atlas of Peruvian Woods
Carrocería de camión
- 53 - Timbers of the New World
Pisos de vagones_contenedores
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
Botes
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Maquetas
- 83 - Algunas caracteristicas fisicomecanicas de la madera de tres especies de la cordillera NeoVolcanica
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