LUPUNA (Chorisia integrifolia)
Nombre comercial
Lupuna
Nombre científico (con autor)
Chorisia integrifolia Ulbr.
Familia
BOMBACACEAE
Nombres Comunes
Paneira (Uruguay); Zamuhu (Paraguay); Toborochi (Bolivia); Paneira (Brazil); Barriguda (Brazil); Yuchan (Argentina); Paneiro (Argentina); Lupuna (Perú)
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
Chorisia trees are massive, reaching heights of 40 m. The boles are cylindrical, with diameters ranging from 120 to 150 cm or more. They usually present 4 to 6 well developed buttresses.
Hábitat natural
Chorisia are pioneer trees, found mostly in secondary forests, close to rivers and water courses.
Distribución natural
The Chorisia genus is reported to be well distributed all over tropical South America.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits coarse in marginal rows. Occasion Axial parenchyma in marginal or in seemingly marginal bands. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma storied. Prismatic crystals in non-chambered axial parenchyma cells. Occasionally prismatic crystals in non-chambe Rays less than 4 per mm (rare). Occasionally larger rays width 0. 1 mm or more and 2 mm or more in height. Rays non-storied. Larger rays more than 4 seriate. Prismatic crystals in the ray cells. Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray 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
It has no discernible odor or taste.
Color
The wood is white color.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
5
Grano
The grain is mostly straight or slightly interlocked.
Veta
Texture is described as coarse.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
5
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.28
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.30
Contracción Tangencial Total (Saturado hasta anhidro) (%)
6.5
Contracción Radial Total (Saturado hasta anhidro) (%)
2.4
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
2.7
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
365
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
176
TRABAJABILIDAD
Aserrado
Sawing of this species is reportedly easy.
Corte de chapa rotativa
This species is interesting for rotary peeling.
Chapa tranchada
This species is interesting for rotary peeling.
Pérdida de filo_romado
It has a slight blunting effect on the cutting tools.
Cepillado
Planing operations are rather easy.
Moldurado
Molding of this species is reported to be easy.
Taladrado
This species is easy to bore.
Usos Reportados
USOS FINALES (RESUMEN)
PLYWOOD AND VENEER, cores
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
Almas
- 27 - Embassy of Brazil in Japan
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