BOSSé CLAIR (Guarea cedrata)
Nombre comercial
Bossé clair
Nombre científico (con autor)
Guarea cedrata Pellegr.
Familia
MELIACEAE
Nombres Comunes
Bosse (Côte d`Ivoire); Diambi (Zaire); Ebangbemva (Cameroon); White guarea; Tshidiamakeka; Tenumeadomei; Telemia; Scented mahogany; Penkwa; Pahiapo; Ossoung; Onwamdua; Obodo blanc; Obobo-nofwa; Nigerian pearwood; Nigerian cedar; Ngbose; Mbosse`; Lombe; Lofun; Kwadwuma; Guissu; Guarea; Edoucie`; Ebangbemva; Ebangbembra; Dzana; Duruiti; Ditoke; Diambi; Cedron; Cedar mahogany; Bossi; Bosse`; Bossassa; Bosassa; Bosae; Bonsannua; Belii; Anokue; African cedar; Edoucie (Cameroon); Obobo (Nigeria); Scented guarea (United Kingdom); Bosse (Germany); Bosasa (Zaire); Obobo nofua (Nigeria); Kwabohoro (Ghana)
Nombres científicos sinónimos (con autores)
Trichilia cedrata A. Chev.; Khaya cunahailata De Wild.; Khaya canaliculata De Wild.; Guarea alitipetiolata De Wild.
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
The tree may reach a height of 10 to 16 m. The bole is straight, with widely spaced plank-like buttresses. The trunk diameter attains 30 to 70 cm. Log is banned for international trading.(Cameroon)
Hábitat natural
Guarea cedrata is a timber species found in some abundance in moist semi-deciduous forest and in the drier undisturbed areas of moist evergreen forest. It is reported in thickets on coastal plains, and on riverbanks. National conservation status in Cote
Distribución natural
Species is widespread in tropical Africa.
Usos No-maderables
Sometimes presence of resin.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 to 150 micras (small). Non-vestured pits. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to intervessel Axial parenchyma oblique and/or sinuous. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Axial parenchyma bands over 4 per mm. Rays non-storied. Rays commonly 2 seriate. Silica bodies in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Occasionally septate fibers present. Fibers with simple to minutely bordered pits.
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Foto macroscópica de la madera, plano radial
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Foto microscópica sección transversal de la madera
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
Pleasant odor.
Color
The sapwood is pale color, it has a thickness of 5 to 10 cm. The heartwood is pinkish brown, it is clearly demarcated. The silver figure is fine (barely visible).
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
6
Grano
The grain is slightly but systematically interlocked.
Veta
The texture varies from fine to medium.
Durabilidad Natural
Durable to decay; this species can be utilized without preservative treatment for exterior joinery or similar uses. Moderately resistant to termites attack. Heartwood is resistant to Lyctus attacks.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
1
Internal growth stresses
No growth stresses are reported in this species.
Contenido de sílice
Silica Content: Silica presence is reported. Amounts over 0.05% may affect wood processing. Silica Value: 0.09
Dificultad para impregnar
Nearly impossible to treat with a too much low penetration of the preservative substances.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.58
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.63
Contracción Tangencial Total (Saturado hasta anhidro) (%)
6.8
Contracción Radial Total (Saturado hasta anhidro) (%)
4.1
Defectos por secado
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.
Calendario de Secado
FR-6
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)
966
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
128959
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
557
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
72
Cizallamiento radial CH12% (kgf/cm²)
85
Dureza Janka (lados) CH12% (kgf)
496
Dureza Janka (extremos) CH12% (kgf)
598
TRABAJABILIDAD
Aserrado
It is easy to saw.
Corte de chapa rotativa
Suitable for slicing, also suitable for peeling if treated.
Chapa tranchada
Suitable for slicing, also suitable for peeling if treated.
Pérdida de filo_romado
Moderate blunting effect; stellited blades for sawing and carbide tools for machining are advised.
Maquinado general
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 the extracts content.
Lijado
Easy to perform; it gives good results.
Sacar lustre
Can be polished without surface preparation.
Doblar al vapor
This species can be used for steam bending.
Facilidad para herramientas manuales
No particular problems.
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, panelling, fittings, FURNITURE AND CABINETS, luxury furniture, cabinets, PLYWOOD AND VENEER, faces, Decorative veneer, TURNING, ornaments, turned furniture, NAVAL CONSTRUCTION, boat deck, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts, cigar boxes
VIVIENDA GENERAL
- 10 - Silica in Timbers
vigas
- 11 - Prospect: The wood database
Viguetas
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Tablas
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Pisos
- 14 - Handbook of Hardwoods
Parquet
- 15 - Empire Timbers
Marcos
- 16 - Woods of the World
Peldaños
- 17 - Tree Conservation Database
Paneles
- 18 - W3TROPICOS Missouri Botanical Garden
Accesorios de madera
- 19 - Silica in Timbers
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Muebles finos
- 22 - Dry kiln schedules for commercial woods. Temperate and tropical. Section IV-Asian and Oceanian Woods
Gabinetes
- 24 - Empire Timbers
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
Caras
- 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
chapa decorativa
- 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Torneado
- 30 - Embassy of Honduras in Japan
artículos torneados
- 31 - Embassy of Colombia in Japan
Artículos torneados
- 32 - Embassy of Cote d`Ivoire in Japan
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
Botes_cubierta
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Puertos_estantería
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Caja para puros
- 68 - Contribucion al conocimiento de la resistencia mecanica de la madera de peumo
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