Select Language:  

logo

< Back UCHUMULLACA (Trichilia spp) Print Friendly View

< Back Print Friendly View

UCHUMULLACA (Trichilia spp)

Trade Name

Uchumullaca

Scientific Name

Trichilia spp.

Family

MELIACEAE

Common Names

Sapaimosi (Bolivia); Sama colorada (Bolivia); Pitón (Bolivia); Piton (Bolivia); Pracuuba (Brazil); Pracuuba da terra firme (Brazil); Pracuúba da terra firme (Brazil); Pracuuba (Brazil); Uchumullaca negra (Peru); Uchumullaca (Peru)

Description Of The Tree

Botanical Description

Small to medium sized trees, with a diameter at breast height of commonly 45 cm. The bole has a commercial length of 6 m in the average.

Natural Distribution

This species occurs in the Amazonian forests of America.

Plantations Available?

View More Information

Wood Identification

Anatomic Description Of Wood

Tangential diameter of vessel lumina 100 micras or less (very small). Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma in marginal or in seemingly marginal bands. Rays more than 10 per mm (abundant). Rays exclusively uniseriate. Silica bodies in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II).

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

Availability

Cites Status

Unrestricted

General Wood Description

Odor

It has a mild smell.

Color

The pink sapwood is distinct from the heartwood which is light reddish brown in color.

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

5

Grain

This species is reported to have irregular grain.

Texture

Texture is usually fine to medium.

Luster

The wood is described as low in luster.

Natural Durability

It is reported to be resistant to fungi and insect attack.

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

1

Resistance To Impregnation

The heartwood of this species is described as impermeable to oil and water borne preservatives.

Wood Physical Properties

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

1.00

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

1.19

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

8.2

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

4.4

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

1.9

Wood Chemical Properties

Wood Mechanical Properties

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

1608

Stiffness (MOE) 12%MC (kgf/cm²)

167000

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

881

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

186

Shear strength radial 12%MC (kgf/cm²)

189

Janka hardness (side) 12%MC (kgf)

1433

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

1332

Workability

Sawing

Sawmilling of this species is reportedly fair to difficult.

Planing

Processing of this species is fair, and it has a very bad finishing. Risk of torn surfaces is reported.

Moulding

Molding operations are rather easy.

Boring

Boring operations are rated as fair, but it has a good finishing.

Sanding

Sanding is rated as fair, with bad finishing. Risk of fuzzy surfaces.

Response To Hand Tools

T. lecointei is difficult to cut with hand saw.

REFERENCED USES

End Uses Summary

EXTERIOR GENERAL, crossties, HOUSING GENERAL, steps, FURNITURE AND CABINETS, PACKING, heavy packing

Exterior General
  • 1 - Tabela de resultados de ensaios fisicos e mecanicos
Crossties
  • 8 - Maderas latinoamericas. III, Podocarpus standleyi ,Podocarpus oleifolius, Drims granadensis, Magnolia poasana y Didymopanax pittieri
General Housing
  • 10 - Silica in Timbers
Steps
  • 17 - Tree Conservation Database
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Packing
  • 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Heavy Packing
  • 47 - Arvores Brasileiras

Please Provide Information To View Producer Information

* Or, continue as guest