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PARINARI (Parinari rodolphii)
Nombre comercial
Parinari
Nombre científico (con autor)
Parinari rodolphii Huber
Familia
CHRYSOBALANACEAE
Nombres Comunes
Merecurillo (Venezuela); Merecure Montañero (Venezuela); Merecurillo Hoja Ancha (Venezuela); Pranari (Brazil); Parinari (Brazil); Castanha (Brazil); Bajão (Brazil); Bagaceira (Brazil); Montañero (Venezuela); Merecure (Venezuela)
DESCRIPCIÓN DEL ÁRBOL
Descripción botánica
The trees are reported to be large, reaching heights of up to 40 m, with trunk diameters from 45 to 75 cm. The boles are cylindrical, with commercial lengths of about 15 to 20 m. It presents small to medium sized buttresses.
Hábitat natural
Parinari rodolphii occurs in the non-flooded forests of the Eastern Amazon, where it is reported growing on non-inundable sites.
Distribución natural
Guyana, Venezuela and Brazil. In Venezuela it is reported to be more abundant especially in the Amacuro and Bolivar states.
IDENTIFICACIÓN DE LA MADERA
Descripción anatómica de la madera
Vessels exclusively solitary (over 90%). Occasionally vessels of two distinct diameter classes, wood not ring-porous. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Vascular/vasicentric trac Occasionally axial parenchyma in discontinuous tangential lines. Axial parenchyma oblique and/or sinuous. Axial parenchyma in continuous tangential lines (included in reticulate and scalariform). Over 9 cells per parenchyma strand. Axial parenchyma in narrow Rays more than 10 per mm (abundant). Rays exclusively uniseriate. Silica bodies in the ray cells. Heterogeneous rays and/or multiseriate heterogeneous rays. Fibers with distinctly bordered pits.
Disponibilidad
Status de protección por CITES
Unrestricted
DESCRIPCIÓN GENERAL DE LA MADERA
Color
The sapwood is not differentiated when dry, the heartwood is light brown color.
Grano
Straight grain is reported in this species.
Veta
The wood is mostly medium in texture.
Brillo
It is reported to be low in luster.
Durabilidad Natural
Laboratory tests show good resistance against decay, but outside tests show little resistance.
Indice de Durabilidad Natural (1=Muy alta, 7=Muy baja)
6
Contenido de sílice
Silica Content: The wood of Parinari is reported to contain up to 2% of silica. Silica Value: 2
Dificultad para impregnar
This species is permeable, it can be treated easily.
PROPIEDADES FÍSICAS DE LA MADERA
Densidad Básica (Peso anhidro/Vol. saturado) (g/cm³)
0.77
Densidad seca al aire (Peso y volúmen CH12%) (g/cm³)
0.88
Contracción Tangencial Total (Saturado hasta anhidro) (%)
9.9
Contracción Radial Total (Saturado hasta anhidro) (%)
5.8
Defectos por secado
Ease of Drying: Air drying is reported to be difficult. Drying Defects: Moderate to severe warping is reported.
Calendario de Secado
UK-B; US-T2-C2
Estabilidad Dimensional (Contracción Total Tangencial %/Contracción Total Radial %)
1.7
PROPIEDADES QUÍMICAS DE LA MADERA
PROPIEDADES MECÁNICAS DE LA MADERA
Resistencia a flexión (Módulo de ruptura) CH12% (kgf/cm²)
1183
Rigidez (Módulo de elasticidad) CH12% (kgf/cm²)
176000
Resistencia a la compresión paralela a la fibra CH12% (kgf/cm²)
690
Cizallamiento radial CH12% (kgf/cm²)
113
Dureza Janka (lados) CH12% (kgf)
1207
Dureza Janka (extremos) CH12% (kgf)
1336
TRABAJABILIDAD
Aserrado
Cutting resistance is generally high.
Pérdida de filo_romado
The wood has a severe blunting effect.
Cepillado
Planing operations are fair.
Usos Reportados
USOS FINALES (RESUMEN)
EXTERIOR GENERAL, bridges, crossties, HOUSING GENERAL, flooring, steps, NAVAL CONSTRUCTION, boats
EXTERIOR GENERAL
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Puentes
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Durmientes
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
VIVIENDA GENERAL
- 10 - Silica in Timbers
Pisos
- 14 - Handbook of Hardwoods
Peldaños
- 17 - Tree Conservation Database
CONSTRUCCIÓN NAVAL
- 55 - Tropical Timber Atlas of Latin America
Botes
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
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