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JEQUITIBA (Cariniana integrifolia)

Trade Name

Jequitiba

Scientific Name

Cariniana integrifolia Ducke

Family

LECYTHIDACEAE

Common Names

Jequitiba (Brazil)

Description Of The Tree

Botanical Description

Cariniana trees are often about 30 to 40 m in height, with a trunk diameter of about 100 to 120 cm. It has a clean bole up to two thirds of the total length.

Natural Habitat

Confined to non-flooded forest of central Amazonia, near Manaus, the species is under threat from increasing land settlement and fires.

Natural Distribution

This species is reported in the vicinity of Manaus, Brazil.

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Wood Identification

Anatomic Description Of Wood

Vessels per mm2 less than 6 (rare). Wood diffuse porous. Vessels solitary and in short radial multiples. Tyloses common. Tangential diameter of vessel lumina 200 micras or more (large). Vessel-ray pits similar to intervessel pits in size and shape. Simple perfo Axial parenchyma apparent with the naked eye. Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma in continuous tangential lines (included in reticulate and scalariform). Axial parenchyma bands over 4 per mm. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with simple to minutely bordered pits.

  • Wood Macro Photo Radial Plane
  • Wood Micro Photo Of Transversal Section

Availability

Cites Status

Unrestricted

General Wood Description

Odor

No odor or taste are reported for this species.

Color

The sapwood is not clearly demarcated form the reddish or purplish-brown heartwood.

COLOR INDEX (1=Black, 7=Light yellow,white)

4

Grain

The grain is straight to interlocked.

Texture

The texture is medium.

Luster

The wood is commonly of medium luster.

Natural Durability

The heartwood is reported to be durable. It is resistant to attack by dry-wood termites.

Natural durability index (1= Very high durability, 7=Vey low durability)

3

Silica Content

Silica Content: Some Cariniana timbers are reported to have high silica content. Silica contents over 0.05% of dry weight are generally believed to affect the machining properties of wood. Silica Value: 0.05

Resistance To Impregnation

The heartwood responds very poorly to preservative treatment, but the sapwood is permeable.

Wood Physical Properties

Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)

0.53

Air-dry Density (Weight and volume at 12%MC) (g/cm³)

0.58

Total shrinkage Tangential (Saturated to 0%MC) (%)

5.0

Total shrinkage Radial (Saturated to 0%MC) (%)

3.0

Drying Defects

Ease of Drying: Air seasoning is reported to be moderate. Drying Defects: Risk of warping is reported.

Recommended Dry Kiln Schedule

US-T3-D2; UK-D

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

1.7

Wood Chemical Properties

Wood Mechanical Properties

Compression parallel to fiber 12%MC (kgf/cm²)

479

Shear strength radial 12%MC (kgf/cm²)

143

Janka hardness (side) 12%MC (kgf)

463

Workability

Sawing

Cariniana timber is easy to saw, but it may blunt the band saws.

Rotary Veneer Cutting

This wood is interesting for peeling.

Sliced Veneer

This wood is interesting for peeling.

Blunting Effect

It is reported to have a moderate blunting effect on cutting edges because of silica.

Machining

Most woodworking qualities of Cariniana are rated as satisfactory.

Planing

Planing operations are rather easy, but dull cutting edges may cause grain tearing.

Turning

30

Nailing

The wood nails satisfactorily but pre-boring is recommended.

Gluing

This wood glues well.

Finishing

It gives a smooth finish.

Staining

The material takes stains well.

Polishing

The wood finishes well.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, flooring, fittings, FURNITURE AND CABINETS, PLYWOOD AND VENEER, faces, cores, TURNING, OTHER AND MUSICAL INSTRUMENTS, moldings

General Housing
  • 10 - Silica in Timbers
Flooring
  • 14 - Handbook of Hardwoods
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
Faces
  • 26 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Cores
  • 27 - Embassy of Brazil in Japan
Turning
  • 30 - Embassy of Honduras in Japan
Molding
  • 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão

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