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KURDUN (Mastixiodendron pachyclados)
Trade Name
Kurdun
Scientific Name
Mastixiodendron pachyclados (K> Schumann) Melchior
Family
RUBIACEAE
Common Names
Kurdun; Koerdop (West Irian); Raimagogo (Indonesia); Garo garo (Papua New Guinea); Aimo (Papua New Guinea); Modjiu (Indonesia); Koerdop (Indonesia)
Scientific Name Synonyms
Fagraea pachyclados K. Schumann
Description Of The Tree
Botanical Description
Small to large trees up to 55 m tall. The bole is straight or twisted, branchless for 30 m and up to 200 cm in diameter. It presents buttresses up to 4 m high.
Natural Habitat
Mastixiodendron occurs from the sea level up to 1,100 m of altitude in primary and secondary forests. It is sometimes reported in swamp forests in pure or nearly pure stands.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels in diagonal and/or radial pattern. Vessels exclusively solitary (over 90%). Vestured pits. Vessels per mm2 more than 20 (very abundant). Vessel-ray pits reticulate and/or foraminate. Vascular/vasicentric tracheides present. Simple pe Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma in narrow bands on lines up to 3 cells wide. Rays more than 10 per mm (abundant). Rays exclusively uniseriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Fibers with distinctly bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is pale yellow-brown, not clearly demarcated from the sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
The grain is usually straight.
Texture
This species is usually reported to have a fine texture.
Natural Durability
It is slightly durable to moderately durable when exposed to the weather or in contact with the ground. It is susceptible to blue stain.
Natural durability index (1= Very high durability, 7=Vey low durability)
6
Resistance To Impregnation
The sapwood is easy and the heartwood is moderately easy to treat under pressure treatments.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.71
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.80
Total shrinkage Tangential (Saturated to 0%MC) (%)
10.5
Total shrinkage Radial (Saturated to 0%MC) (%)
5.1
Drying Defects
Ease of Drying: Boards dry rapidly without much degrade. Drying Defects: The wood is sometimes prone to collapse, checking, cupping and warping. Kiln Schedules: Wood of this species from New Britain is reported as easy to kiln dry.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.1
Wood Chemical Properties
Wood Mechanical Properties
Workability
Sawing
Cutting resistance is generally low.
Rotary Veneer Cutting
This timber is reported to be suitable for lamination.
Sliced Veneer
This timber is reported to be suitable for lamination.
Planing
Planing operations are rather easy.
REFERENCED USES
End Uses Summary
EXTERIOR GENERAL, bridges, poles, HOUSING GENERAL, flooring, steps, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TOOLS, tool handles, NAVAL CONSTRUCTION, boats, boat deck, port pillar, port storage
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)
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Steps
- 17 - Tree Conservation Database
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
- 24 - Empire Timbers
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
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
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