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TATAJUBA (Bagassa tiliaefolia)
Trade Name
Tatajuba
Scientific Name
Bagassa tiliaefolia
Family
MORACEAE
Common Names
Cow Wood; Bagasse
Description Of The Tree
Botanical Description
The trees of this genus are reported to be dominant, with trunk diameters ranging from 75 to 95 cm. They develop well-formed and cylindrical boles. It presents abundant sticky white latex.
Natural Habitat
Bagassa species are reported to occur in terra firme primary or secondary forests in the Guyanas and the Brazilian Amazon.
Natural Distribution
This species occurs in Guyana and the northern South America.
Non Timber Uses
The bark contains large quantities of a sweet, sticky latex.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Occasionally intervessel pits large, 10 micras o Occasionally axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in non-chambered axial parenchyma cells. 5 to 8 cells per parenchyma strand. 4 to 10 rays per mm (medium). Rays 1 to 4 seriate. Prismatic crystals in the ray cells. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The sapwood is differentiated. The heartwood is yellow brown, the timber gets darker after exposure.
COLOR INDEX (1=Black, 7=Light yellow,white)
3
Grain
It is frequently slightly interlocked.
Texture
This species is reported to have a medium to coarse texture.
Luster
This wood is commonly of high luster.
Natural Durability
It is very resistant to decay and resistant against termites and dry wood insects.
Natural durability index (1= Very high durability, 7=Vey low durability)
1
Resistance To Impregnation
This wood is resistant to preservative treatment.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.72
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.81
Total shrinkage Tangential (Saturated to 0%MC) (%)
5.3
Total shrinkage Radial (Saturated to 0%MC) (%)
3.8
Drying Defects
Ease of Drying: Slow drying rates give satisfactory results.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.4
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1446
Stiffness (MOE) 12%MC (kgf/cm²)
176667
Compression parallel to fiber 12%MC (kgf/cm²)
756
Shear strength radial 12%MC (kgf/cm²)
57
Workability
Sawing
Sawing of this species is easy.
Finishing
It has a good finishing.
Steam Bending
Steam bending of this species is reportedly easy.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, HOUSING GENERAL, beams, joists, flooring, fittings, FURNITURE AND CABINETS, cabinets, SPORTS, NAVAL CONSTRUCTION, boat deck, OTHER AND MUSICAL INSTRUMENTS, moldings
Exterior General
- 1 - Tabela de resultados de ensaios fisicos e mecanicos
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
Fittings
- 19 - Silica in Timbers
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boat Decking
- 59 - Programa Nacional de uso Sostenible de los Bosques e Incremento a las Exportaciones.
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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