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PúNULA (Quararibea asterolepis)
Nombre comercial
Púnula
Nombre científico (con autor)
Quararibea asterolepis Pittier
Familia
BOMBACACEAE
Nombres Comunes
Punula; Aspai; Guayabo (Panama); Madre De Cacao (Mexico); Veroity (Brazil); Aspaí (Venezuela); Zapotillo (Perú); Zapotillo (Colombia); Púnula (Colombia)
Nombres científicos sinónimos (con autores)
Quararibea stenophylla Pittier; Quararibea asterolepis subsp. Stenophylla
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
Tree size is reported to attain a height of about 18m in the average, with a trunk diameter that can reach up to 45 cm over the buttresses, which can be up to 6 m long. Usually develops a fluted stem.
Distribución natural
This species occurs in Central and northern South America down to Perú.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 100 to 150 micras (small). Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Paratracheal axial parenchyma thin vasicentric. Axial parenchyma reticulate. Siliceous bodies in the axial parenchyma cells. Axial parenchyma in narrow bands on lines up to 3 cells wide. 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. Silica bodies in the ray cells. Prismatic crystals in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Non-septate fibers. Fibers with simple to minutely bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Olor
Odor and taste are indistinct.
Color
The wood is not clearly differentiated, the heartwood is pale yellow.
Indice de Color (1= Negro, violeta; 7= Amarillo claro, blanco)
5
Grano
The grain is usually straight.
Veta
This wood has a somewhat medium texture.
Brillo
The wood surface is moderate in luster.
Durabilidad Natural
The wood is non-durable when exposed to the weather.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
5
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.49
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.53
Contracción Tangencial Total (Saturado hasta anhidro) (%)
7.1
Contracción Radial Total (Saturado hasta anhidro) (%)
3.9
Defectos por secado
Ease of Drying: Timber of heavy Cordia is reported to be difficult to dry. Drying Defects: It develops surface checking and end splitting.
Calendario de Secado
JUNAC-A
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.8
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
767
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
107000
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
422
Resistencia a la compresión perpendicular a la fibra CH12% (kgf/cm²)
70
Cizallamiento radial CH12% (kgf/cm²)
85
Dureza Janka (lados) CH12% (kgf)
509
Dureza Janka (extremos) CH12% (kgf)
458
TRABAJABILIDAD
Maquinado general
It is easy to machine.
Torneado
30
Usos Reportados
USOS FINALES (RESUMEN)
HOUSING GENERAL, fittings, shutter boards, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TURNING, OTHER AND MUSICAL INSTRUMENTS, handicrafts
VIVIENDA GENERAL
- 10 - Silica in Timbers
Accesorios de madera
- 19 - Silica in Timbers
Persianas
- 20 - Prospect: The wood database
MUEBLES Y GABINETES
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Gabinetes
- 24 - Empire Timbers
TABLEROS Y CHAPAS
- 25 - Directory of Timber Trade Malaysia
Torneado
- 30 - Embassy of Honduras in Japan
artesanía
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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