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JARQUILLA (Macrosamanea pedicellaris)
Trade Name
Jarquilla
Scientific Name
Macrosamanea pedicellaris (DC.) Kleinhoonte
Family
LEGUMINOSAE
Common Names
Jurema (Brazil); Sobreiero (Brazil); Gambui (Brazil); Pokronie (Surinam); Bosh Tamarinde (Surinam); Tamaren Prokoni (Surinam); Tamalin (Surinam); Manariballi (Guyana); Hueso De Pescado (Venezuela); Vilco Colorado (Peru); Dormilón (Colombia); Sombrerillo (Bolivia); Jarquilla (Bolivia); Tamarin Prokonie; Assao
Scientific Name Synonyms
Samanea pedicellaris (DC.) Killip ex Record; Pithecellobium pedicellare (DC.) Benth.; Inga pedicellaris DC.
Description Of The Tree
Botanical Description
It is a dominant tree, it attains heights of 40 m, with a diameter at breast height of about 90 cm. The bole is straight but it has an irregular, somewhat polygonal shape.
Natural Habitat
Macrosamanea pedicellaris grows in primary and secondary tropical rain forests. It prefers areas close to rivers and water courses, it has an abundant natural regeneration.
Natural Distribution
This species is found in northern South America down to Bolivia. In Bolivia it is reported in the departments of Cochabamba, Pando, Beni and Santa Cruz.
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). Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. I Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma lozenge-aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Occasionally rays and/or axial elements irregularly storied. 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
This species has a distinct odor.
Color
The white sapwood is slightly differentiated from the heartwood, which is pale brown when dry.
Grain
The grain is usually interlocked.
Texture
The wood is typically medium in texture.
Luster
This species is moderate in luster.
Internal Growth Stresses
Residual stresses present in the wood may affect the yield in sawing.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.55
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.60
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.0
Total shrinkage Radial (Saturated to 0%MC) (%)
3.0
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.3
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1167
Stiffness (MOE) 12%MC (kgf/cm²)
114000
Compression parallel to fiber 12%MC (kgf/cm²)
458
Shear strength radial 12%MC (kgf/cm²)
64
Workability
Sawing
Cutting behavior is reported to be fair.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, fittings, PACKING, light packing, OTHER AND MUSICAL INSTRUMENTS, handicrafts, moldings
General Housing
- 10 - Silica in Timbers
Fittings
- 19 - Silica in Timbers
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Light Packing
- 46 - ECUADOR, Inventario y Aprovechamiento de los Bosques del Sur Ecuatoriano
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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