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PARINARI (Parinari rodolphii)
Trade Name
Parinari
Scientific Name
Parinari rodolphii Huber
Family
CHRYSOBALANACEAE
Common Names
Merecurillo (Venezuela); Merecure Montañero (Venezuela); Merecurillo Hoja Ancha (Venezuela); Pranari (Brazil); Parinari (Brazil); Castanha (Brazil); Bajão (Brazil); Bagaceira (Brazil); Montañero (Venezuela); Merecure (Venezuela)
Description Of The Tree
Botanical Description
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.
Natural Habitat
Parinari rodolphii occurs in the non-flooded forests of the Eastern Amazon, where it is reported growing on non-inundable sites.
Natural Distribution
Guyana, Venezuela and Brazil. In Venezuela it is reported to be more abundant especially in the Amacuro and Bolivar states.
Wood Identification
Anatomic Description Of Wood
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.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is not differentiated when dry, the heartwood is light brown color.
Grain
Straight grain is reported in this species.
Texture
The wood is mostly medium in texture.
Luster
It is reported to be low in luster.
Natural Durability
Laboratory tests show good resistance against decay, but outside tests show little resistance.
Natural durability index (1= Very high durability, 7=Vey low durability)
6
Silica Content
Silica Content: The wood of Parinari is reported to contain up to 2% of silica. Silica Value: 2
Resistance To Impregnation
This species is permeable, it can be treated easily.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.77
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.88
Total shrinkage Tangential (Saturated to 0%MC) (%)
9.9
Total shrinkage Radial (Saturated to 0%MC) (%)
5.8
Drying Defects
Ease of Drying: Air drying is reported to be difficult. Drying Defects: Moderate to severe warping is reported.
Recommended Dry Kiln Schedule
UK-B; US-T2-C2
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.7
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1183
Stiffness (MOE) 12%MC (kgf/cm²)
176000
Compression parallel to fiber 12%MC (kgf/cm²)
690
Shear strength radial 12%MC (kgf/cm²)
113
Janka hardness (side) 12%MC (kgf)
1207
Janka hardness (end grain) 12%MC (kgf)
1336
Workability
Sawing
Cutting resistance is generally high.
Blunting Effect
The wood has a severe blunting effect.
Planing
Planing operations are fair.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, bridges, crossties, HOUSING GENERAL, flooring, steps, NAVAL CONSTRUCTION, boats
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Bridges
- 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
Crossties
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Steps
- 17 - Tree Conservation Database
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
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