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LOURO AMARELO (Licaria rigida)
Trade Name
Louro amarelo
Scientific Name
Licaria rigida (Kosterm.) Kosterm.
Family
LAURACEAE
Common Names
Louro Amarelo (Brazil)
Scientific Name Synonyms
Acrodiclidium rigidum Kosterm.
Description Of The Tree
Botanical Description
The Licaria trees develop well-formed and cylindrical boles that are 12 m long, with diameters of 50 cm in the average. Buttresses over 3 m tall are also reported.
Natural Distribution
In Brazil it is reported in the Para state.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 150 to 200 micras (medium). Tyloses common. Vessels per mm2 6 to 10 (medium). Simple perforation plates. Vessel-ray pits coarse throughout the ray cell. Occ Paratracheal axial parenchyma scanty and/or vasicentric. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Occasionally prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Oil and/or mucilage cells at marginal cells of ray parenchyma. Body ray cells procumbe Septate fibers present.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
This species has a pleasant smell.
Color
The heartwood and sapwood are distinct. The sapwood is yellowish-brown and the heartwood dark yellowish-brown color.
Grain
The grain is mostly irregular
Texture
The texture of the wood is medium.
Luster
This wood is commonly of moderate luster.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.73
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.82
Total shrinkage Tangential (Saturated to 0%MC) (%)
9.1
Total shrinkage Radial (Saturated to 0%MC) (%)
5.3
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.7
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1688
Stiffness (MOE) 12%MC (kgf/cm²)
179000
Compression parallel to fiber 12%MC (kgf/cm²)
872
Compression perpendicular to fiber 12%MC (kgf/cm²)
130
Shear strength radial 12%MC (kgf/cm²)
171
Janka hardness (side) 12%MC (kgf)
916
Janka hardness (end grain) 12%MC (kgf)
1077
Workability
Planing
Planing operations are reported as fair, with bad finishing because of grain tearing.
Boring
Boring is reported to be easy, with good finishing. Sometimes torn and fuzzy surfaces are also reported.
Sanding
Sanding is rated as fair, with bad finishing. Fuzzy surfaces are reported.
Response To Hand Tools
It is difficult to cut.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, boards, NAVAL CONSTRUCTION, boats
General Housing
- 10 - Silica in Timbers
Boards
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
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