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PAU MULATO (Calycophyllum multiflorum)
Trade Name
Pau mulato
Scientific Name
Calycophyllum multiflorum Griseb.
Family
RUBIACEAE
Common Names
Pau Mulato (Brazil)
Scientific Name Synonyms
Calycophyllum spruceanum var. multiflorum (Griseb.
Description Of The Tree
Botanical Description
The tree reaches heights up to 30 m, with straight, well formed boles.
Natural Distribution
It is reported in Bolivia in the departments of Tarija, Chuquisaca and Santa Cruz.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels solitary and in short radial multiples. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 micras or less (very small). Vessels per mm2 more than 20 (very abundant). Simple perforation plates. Vessel-r Axial parenchyma absent or extremely rare, non visible with magnifying glass (8x). Rays more than 10 per mm (abundant). Larger rays more than 4 seriate. Heterogeneous rays and/or multiseriate heterogeneous rays. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Septate fibers present. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
Odor and taste are reported to be indistinct.
Color
Sapwood and heartwood are not clearly differentiated. The wood is white yellowish in color, with faint light brown streaks.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
This species is reported to have straight grain.
Texture
The wood is fine textured.
Natural Durability
This species is reported to be durable or moderately durable. It has a moderate resistance against decay and termites attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Resistance To Impregnation
C. multiflorum is reported to be somewhat permeable, with low absorption of oil based preservatives but good absorption of CCA salts.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.69
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.78
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.4
Total shrinkage Radial (Saturated to 0%MC) (%)
4.0
Drying Defects
Ease of Drying: It is reported to air dry rapidly. Drying Defects: It has a tendency to checking and cupping, severe casehardening is also reported.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.9
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
947
Compression parallel to fiber 12%MC (kgf/cm²)
552
Janka hardness (side) 12%MC (kgf)
912
Workability
Sawing
Sawing operations are rated as fair.
Machining
This timber is considered to be moderately difficult to process.
Planing
Planing operations are reported to be fair.
Turning
30
Finishing
Finishing of this species is reportedly easy.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, beams, joists, FURNITURE AND CABINETS, common furniture, TURNING, SPORTS, table tennis, TOOLS, tool handles, PACKING, pallets, CONTAINERS, truck bodies, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, shoes
General Housing
- 10 - Silica in Timbers
Beams
- 11 - Prospect: The wood database
Joists
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Furniture, Common
- 23 - Handbook of Hardwoods
Turning
- 30 - Embassy of Honduras in Japan
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
- 41 - Embassy of the Philippines
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Pallets
- 48 - The strength properties of timbers
Truck Body
- 53 - Timbers of the New World
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Shoes
- 70 - Proprietes physiques et mecaniques des bois tropicaux de l`union francaise
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