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MACACAúBA (Platymiscium trinitatis)

Trade Name

Macacaúba

Scientific Name

Platymiscium trinitatis Benth.

Family

LEGUMINOSAE

Common Names

Macacaúba Preta (Brazil); Macawood; Macacaúba Vermelha (Brazil); Jandiá (Brazil); Jacarandá Piranga (Brazil); Jacarandá Do Brejo (Brazil); Macacaúba-Vermelha (Brazil); Trébol; Macacaúba-Vermehla (Brazil); Macacaúba-Preta (Brazil); Macacaúba (Brazil)

Scientific Name Synonyms

Platymiscium nigrum Ducke; Platymiscium duckei Huber; Platymiscium duckei var. nigrum (Ducke) Ducke

Description Of The Tree

Botanical Description

It is a small or medium size tree.

Natural Habitat

Platymiscium trinitatis is reported in terra firme forests, growing on clayey soils.

Natural Distribution

In Brazil it is reported in the lower Amazon region and southern Bahia.

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). Colored deposits in heartwood vessels. Occasionally white deposits in heartwood vessels. Vessels per mm2 less than 6 (rare). Si Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma aliform. Axial parenchyma confluent. Occasionally axial parenchyma storied. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchy Rays more than 10 per mm (abundant). Occasionally rays and/or axial elements irregularly storied. Occasionally rays storied. Rays exclusively uniseriate. 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

Odor or taste are absent.

Color

The heartwood varies from red to brown red color, with dark vertical streaks.

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

4

Grain

This species is typically reported to have interlocked or irregular grain.

Texture

The wood is mostly medium in texture.

Luster

This wood is not lustrous.

Natural Durability

This species is highly resistant to biological attack.

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

1

Wood Physical Properties

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

0.94

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

1.10

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

5.6

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

5.3

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

1.1

Wood Chemical Properties

Wood Mechanical Properties

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

1932

Stiffness (MOE) 12%MC (kgf/cm²)

224000

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

1127

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

200

Shear strength radial 12%MC (kgf/cm²)

178

Janka hardness (side) 12%MC (kgf)

1149

Janka hardness (end grain) 12%MC (kgf)

1430

Workability

Sawing

Sawmilling of this species is reportedly fair to difficult.

Machining

This timber is considered to be difficult to process, the surface finishing is fair.

Turning

30

Finishing

This species has a fair behavior in finishing.

Substitute Species

P. trinitatis is a very hard wood, superior in physical properties to most of the European and North American species.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, bridges, poles, paling, stakes posts, rails, crossarms, crossties, HOUSING GENERAL, beams, joists, boards, flooring, parquet, frames, steps, FURNITURE AND CABINETS, PLYWOOD AND VENEER, Decorative veneer, TURNING, ornaments, turned furniture, cutlery, BENDING, chairs, SPORTS, bowling polo balls, TOOLS, tool handles, agricultural tools, CONTAINERS, truck bodies, NAVAL CONSTRUCTION, boat deck, port pillar, port storage, OTHER AND MUSICAL INSTRUMENTS, violin, handicrafts, axle, yoke, shingle

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Bridges
  • 2 - 25 madeiras da amazonia de valor comercial, caracterizacao, macroscopica, usos comuns e indices qualificativos
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
Rails
  • 6 - Physical and mechanical properties of Eucalyptus deglupta Blume grown in Costa Rica
Crossheads Crossarms
  • 7 - Maderas latinoamericanas. II, Quercus alata Q. costaricensis y Q. eugeniaefolia
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
Boards
  • 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Flooring
  • 14 - Handbook of Hardwoods
Parquet
  • 15 - Empire Timbers
Frames
  • 16 - Woods of the World
Steps
  • 17 - Tree Conservation Database
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
Decorative veneer
  • 28 - Ministry of Agriculture, Fisheries & Forest of Fiji
Turning
  • 30 - Embassy of Honduras in Japan
Ornaments
  • 31 - Embassy of Colombia in Japan
Turned Articles
  • 32 - Embassy of Cote d`Ivoire in Japan
Knife Handles
  • 33 - Embassy of Gabon in Japan
Bending
  • 35 - Embassy of Myanmar in Japan
Chairs
  • 36 - Autoridad Nacional del Ambiente, Panama
Sports
  • 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Balls Bowling Polo
  • 40 - Internet
Tools
  • 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
  • 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Agricultural Tools
  • 44 - Atlas of Peruvian Woods
Truck Body
  • 53 - Timbers of the New World
Shipbuilding
  • 55 - Tropical Timber Atlas of Latin America
Boat Decking
  • 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Port Pillar
  • 61 - Manual de Diseño para Maderas del Grupo Andino
Port Storage
  • 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
Other & Musical Instruments
  • 63 - Madeiras do Brazil II
Violin
  • 64 - Maderas latinoamericanas. V. Carapa sp., Virola koschnyi, Terminalia lucida y Brosimum costaricanum.
Handcraft
  • 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Axles
  • 73 - Handbook of Hardwoods
Yokes
  • 74 - World Timbers, Vol.2, North and South America
Shingles
  • 77 - Amazonian Timbers, Characteristics and Utilization Volume I; Tapajós National Forest

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