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CURUPAY (Anadenanthera colubrina)

Trade Name

Curupay

Scientific Name

Anadenanthera colubrina (Vell.) Brenan

Family

LEGUMINOSAE

Common Names

Cebil Colorado; Cebil; Angico Preto (Brazil); Curupay (Paraguay)

Scientific Name Synonyms

Mimosa colubrina Vell.; Anadenanthera macrocarpa (Benth) Brenan; Acacia colubrina Mart.

Description Of The Tree

Botanical Description

The tree reaches a height of 25 m, with a diameter of 110 cm, it does not present buttresses. The logs are reported to be straight and cylindrical.

Natural Habitat

A tree of seasonally dry climates, occurring in caatinga, cerrado and dry forest on deep soils. It is found between 400 and 1,600 m of altitude, on well drained soils.

Natural Distribution

This species is reported in the Chaco area in Argentina, Bolivia, Brazil and Paraguay, and also in Peru.

Non Timber Uses

Tannins are found in the bark. The seeds are reported to have narcotic effects.

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Vessels solitary and in short radial multiples. Occasionally tangential diameter of vessel lumina 100 micras or less. Vessels per mm2 10 to 20 (abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and s Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma confluent. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchyma cell 4 to 10 rays per mm (medium). Rays non-storied. Larger rays more than 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with simple to minutely bordered pits.

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

Availability

Cites Status

Unrestricted

General Wood Description

Odor

Odor and taste are reported to be indistinct.

Color

The sapwood is differentiated, it is white yellowish color, the heartwood is reddish brown.

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

3

Grain

It has interlocked grain.

Texture

The texture of this species is reported to vary from fine to medium.

Luster

Timber of this species is moderate in luster.

Natural Durability

It is reported to be very durable.

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

1

Resistance To Impregnation

The heartwood is untreatable.

Wood Physical Properties

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

0.80

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

0.92

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

7.9

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

3.7

Recommended Dry Kiln Schedule

US-T8-B3; UK-G

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

2.1

Wood Chemical Properties

Wood Mechanical Properties

Bending Strength (MOR),12%MC (kgf/cm²)

1737

Stiffness (MOE) 12%MC (kgf/cm²)

183000

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

790

Shear strength radial 12%MC (kgf/cm²)

270

Janka hardness (side) 12%MC (kgf)

1482

Workability

Sawing

For this species reinforced cutting tools are recommended.

Machining

Machining operations are fair to difficult.

Planing

Planing is reported to be difficult.

Boring

It is difficult to bore.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, poles, paling, stakes posts, crossties, HOUSING GENERAL, beams, joists, flooring, steps, CONTAINERS, cooperage, NAVAL CONSTRUCTION

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Poles
  • 3 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas do genipapo (Genipa americana)
Paling Fence Pickets
  • 4 - Estudo dendrologico e determinacao das caracteristicas fisicas e mecanicas da bicuiba
Stake Posts
  • 5 - Propriedades fisicas e mecanicas da madeira e do contraplacado de Pinus elliottii
Crossties
  • 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
  • 10 - Silica in Timbers
Beams
  • 11 - Prospect: The wood database
Joists
  • 12 - Tropical timbers of the world. Part I-Tropical American Species
Flooring
  • 14 - Handbook of Hardwoods
Steps
  • 17 - Tree Conservation Database
Containers
  • 50 - Properties of imported tropical woods
Cooperage
  • 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Shipbuilding
  • 55 - Tropical Timber Atlas of Latin America

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