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DORMILóN (Pentaclethra macroloba)
Trade Name
Dormilón
Scientific Name
Pentaclethra macroloba (Willd.) Kuntze
Family
LEGUMINOSAE
Common Names
Wild tamarind; Sangredo fabo; Pracachy; Paroa-caxy; Parana-cachy; Palo de aceite; Mulato; Kroebara; Koorooballi; Koeroeballi; Koeroebahara; Gavilan; Gabilan; Fine-leaf; Gavilán (Costa Rica); Bois Mulatre (Trinidad & Tobago); Pracaxy (Brazil); Carbonero (Venezuela); Aserrín (Colombia); Capitancillo (Colombia); Dormilón (Colombia); Gavilán (Nicaragua); Palo Mulato (Venezuela); Opagga; Koroballi; Ataka; Oil Bean; Apara (Brazil); Trysil
Scientific Name Synonyms
Mimosa macroloba (Willd.) Poir.; Cailliea macrostachya Steud.; Acacia macroloba Willd.; Acacia aspidioides G. Meyer
Description Of The Tree
Botanical Description
The trees are reported to reach heights of 24 m in the average, with trunk diameters of 60 cm over the buttresses. They develop straight, or sometimes fluted, boles that are up to 10 m long.
Natural Habitat
Pentaclethra macroloba is found along the rivers and streams, and also in low hills.
Natural Distribution
This species is reported to be common in the tropical rain forests of Central America and northern South America.
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). Occasionally vessels with colored deposits. White deposits in heartwood vessels. Occasionally vessels per mm2 less than 6. Simp Axial parenchyma in marginal or in seemingly marginal bands. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally axial parenchyma lozenge-aliform. Occasionally axial parenchy Occasionally rays more than 10 per mm (abundant). Rays exclusively uniseriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
It is reported to have a characteristic odor.
Color
The sapwood is pink, the heartwood gradually changes into reddish brown.
Grain
The direction of the grain is straight to slightly interlocked.
Texture
The texture of this species is reported to vary from medium to coarse.
Luster
This species has moderate to high luster.
Natural Durability
This species is resistant to termites attack and it is not affected by wood staining fungi.
Natural durability index (1= Very high durability, 7=Vey low durability)
2
Resistance To Impregnation
It is a permeable wood, with good preservatives retention.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.72
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.81
Total shrinkage Tangential (Saturated to 0%MC) (%)
8.5
Total shrinkage Radial (Saturated to 0%MC) (%)
4.5
Drying Defects
Ease of Drying: The rate of drying is reported to be slow to moderate.
Recommended Dry Kiln Schedule
JUNAC-C
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.9
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1265
Stiffness (MOE) 12%MC (kgf/cm²)
162000
Compression parallel to fiber 12%MC (kgf/cm²)
737
Shear strength radial 12%MC (kgf/cm²)
141
Janka hardness (side) 12%MC (kgf)
738
Janka hardness (end grain) 12%MC (kgf)
997
Workability
Sawing
Wood of this species is easy to cut.
Machining
Machining operations are fair.
Planing
Planing is reported to be difficult.
Moulding
It is easy to mold.
Boring
Boring is reported to be easy.
Mortising
Mortising operations are rather easy.
Nailing
Nailing properties are fair.
Sanding
This species is reported to be easy to sand.
Finishing
It has a good finishing.
Polishing
It has a good polishing.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, beams, joists, boards, fittings, FURNITURE AND CABINETS, PLYWOOD AND VENEER, PACKING
General Housing
- 10 - Silica in Timbers
Beams
- 11 - Prospect: The wood database
Joists
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Boards
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Fittings
- 19 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
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