< Back P.N.G SWAMP BOX (Lophostemon confertus) Print Friendly View
P.N.G SWAMP BOX (Lophostemon confertus)
Trade Name
P.N.G swamp box
Scientific Name
Lophostemon confertus (R. Br.) Peter G. Wilson & Waterhouse
Family
MYRTACEAE
Common Names
Pelawan; Selunsur (Sarawak); Bruh box (Australia)
Scientific Name Synonyms
Tristania conferta R. Br.
Description Of The Tree
Botanical Description
It is a small to medium-sized tree up to 40 m tall. The bole is straight, occasionally crooked, up to 100 cm in diameter.
Natural Habitat
Lophostemon trees occur as mature residual trees in lowland rain forests, and commonly extended to wet and moist open forest, usually along water courses.
Plantations Available?
This species is reported to be planted in the tropics outside its origin, including Indonesia and Java.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels in radial multiples of 4 or more common. Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally vessels with colored deposits. Vestured pits. Occasionally vessels per mm2 more than 20. Vessels per mm2 mor Occasionally axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally paratracheal axial parenchyma scanty and/or vasicentric. Two cells per parenchyma strand. 3 to 4 cells per parenchy 4 to 10 rays per mm (medium). Rays more than 10 per mm (abundant). Rays exclusively uniseriate. 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
Odor
Seasoned wood has no characteristic odor or taste.
Color
The heartwood is red, pink-brown or red-brown, turning grayish upon exposure, clearly demarcated from the pale brown or pale pink sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The grain is interlocked, sometimes wavy.
Texture
The wood texture is frequently fine, occasionally medium.
Natural Durability
It is fairly durable to durable in contact with the ground or exposed to weather. It is resistant to termite and marine borer attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
2
Resistance To Impregnation
The sapwood is reported to be easy to preserve but 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)
0.91
Total shrinkage Tangential (Saturated to 0%MC) (%)
10.9
Total shrinkage Radial (Saturated to 0%MC) (%)
5.5
Drying Defects
Ease of Drying: Boards of 13 mm and 38 mm thick take respectively 2 months and 3 to 4 months to air dry. Drying Defects: The sapwood is prone to stain and there is a slight risk of cupping.
Recommended Dry Kiln Schedule
UK-C; US-T3-C2
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.0
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
1010
Stiffness (MOE) 12%MC (kgf/cm²)
147341
Compression parallel to fiber 12%MC (kgf/cm²)
538
Shear strength radial 12%MC (kgf/cm²)
125
Janka hardness (end grain) 12%MC (kgf)
894
Workability
Sawing
Sawmilling is reportedly easy.
Machining
Machining operations are rather difficult.
Planing
Planing operations are reported to be good provided a low cutting angle is used to reduce picking up of fibers in material with interlocked grain. Plantation grown material works somewhat easier.
Moulding
Molding operations are rather as fair to difficult.
Turning
30
Boring
This species is easy to bore.
Mortising
Mortising operations are fair to difficult.
Nailing
Nailing properties are poor.
Finishing
Finishing of this species is reportedly good.
Response To Hand Tools
It has a poor response to hand tools.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, bridges, poles, stakes posts, rails, crossarms, crossties, HOUSING GENERAL, beams, flooring, TURNING, SPORTS, TOOLS, tool handles, agricultural tools, CONTAINERS, truck bodies, truck flooring, NAVAL CONSTRUCTION, port pillar, port storage, OTHER AND MUSICAL INSTRUMENTS, handicrafts, axle
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)
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
Flooring
- 14 - Handbook of Hardwoods
Turning
- 30 - Embassy of Honduras in Japan
Sports
- 38 - Annual Review and Assessment of the World Timber Situation 1998-ITTO
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
Truck Flooring
- 54 - Bulletin of the Government Forest Experiment Station N.157: Identification of Tropical Woods
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Port Pillar
- 61 - Manual de Diseño para Maderas del Grupo Andino
Port Storage
- 62 - Estudio Tecnológico de Maderas del Perú (Zona Pucallpa) Vol I
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
Please Provide Information To View Producer Information