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MATA MATA (Eschweilera juruensis)
Trade Name
Mata mata
Scientific Name
Eschweilera juruensis R. Knuth
Family
LECYTHIDACEAE
Common Names
Machimango (Peru); Mambarklak; Mata Mata; Mata Rojo (Colombia); Mata (Colombia); Machimango Blanco (Peru)
Description Of The Tree
Botanical Description
The trees are reported to reach heights of 40 m, with trunk diameters ranging from 90 to 110 cm. The boles are cylindrical or slightly fluted, with small but thick buttresses.
Natural Habitat
Eschweilera juruensis grows in the varzea and terra firme forests.
Natural Distribution
The geographical range for this species is the tropical forest of Colombia and Peru. In Peru it is found in the departments of Loreto, Ucayali and Huanuco.
Wood Identification
Anatomic Description Of Wood
Vessels exclusively solitary (over 90%). Tyloses common. Vessels per mm2 less than 6 (rare). Axial parenchyma in continuous tangential lines (included in reticulate and scalariform). Rays more than 10 per mm (abundant).
Availability
Cites Status
Unrestricted
General Wood Description
Odor
Odor or taste are absent.
Color
The sapwood is not clearly differentiated, the heartwood is pale brown when dry.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The grain is mostly interlocked.
Texture
This species is reported to have a medium to coarse texture.
Luster
This species is low in luster.
Natural Durability
It is very durable against decay. This species is very resistant against termites and it is not attacked by Lyctus.
Natural durability index (1= Very high durability, 7=Vey low durability)
1
Resistance To Impregnation
This timber is reported to respond poorly to preservative treatment.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.86
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.99
Total shrinkage Tangential (Saturated to 0%MC) (%)
13.0
Total shrinkage Radial (Saturated to 0%MC) (%)
7.3
Drying Defects
Ease of Drying: It is reported to dry easily. Drying Defects: Some warping is reported, it can be serious in case of timber with irregular grain.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.8
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1843
Stiffness (MOE) 12%MC (kgf/cm²)
124000
Compression parallel to fiber 12%MC (kgf/cm²)
907
Shear strength radial 12%MC (kgf/cm²)
150
Janka hardness (side) 12%MC (kgf)
1143
Janka hardness (end grain) 12%MC (kgf)
1077
Workability
Machining
This species splits easily, making the machining operations difficult.
Finishing
It finishes smoothly.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, crossties, HOUSING GENERAL, beams, parquet, fittings
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
Crossties
- 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
- 10 - Silica in Timbers
Beams
- 11 - Prospect: The wood database
Parquet
- 15 - Empire Timbers
Fittings
- 19 - Silica in Timbers
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