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MUIRATINGA (Maquira sclerophylla)
Trade Name
Muiratinga
Scientific Name
Maquira sclerophylla (Ducke) C.C. Berg
Family
MORACEAE
Common Names
Muiratinga (Brazil); Miratinga (Brazil)
Scientific Name Synonyms
Olmedioperebea sclerophylla Ducke
Description Of The Tree
Botanical Description
This tree has straight and cylindrical boles, with commercial lengths up to 18 m, and diameters up to 75 cm. It presents latex.
Natural Habitat
This species is found in the Amazon basin.
Natural Distribution
In Brazil it is reported in the Para state.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Tangential diameter of vessel lumina 150 to 200 micras (medium). Tyloses thin walled. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits larger than the intervessel pits. Intervessel pits small, 7 micras or less. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Axial parenchyma aliform. Axial parenchyma confluent. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. 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). Septate fibers present. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
Heartwood and sapwood are indistinct. The wood is yellowish-white to light yellowish-brown color.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
The grain is reported to be straight or interlocked.
Texture
The texture of the wood is medium.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.64
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.72
Total shrinkage Tangential (Saturated to 0%MC) (%)
9.4
Total shrinkage Radial (Saturated to 0%MC) (%)
4.2
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.2
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1129
Stiffness (MOE) 12%MC (kgf/cm²)
115000
Compression parallel to fiber 12%MC (kgf/cm²)
618
Compression perpendicular to fiber 12%MC (kgf/cm²)
86
Shear strength radial 12%MC (kgf/cm²)
122
Janka hardness (side) 12%MC (kgf)
630
Janka hardness (end grain) 12%MC (kgf)
842
Workability
Sawing
Cutting behavior is reported to be fair.
Planing
Planing of this species is fair.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, flooring, FURNITURE AND CABINETS
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
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