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MEMPISANG (Alphonsea javanica)

Trade Name

Mempisang

Scientific Name

Alphonsea javanica Scheff.

Family

ANNONACEAE

Common Names

Karai (Sabah); Denralia wone (Sumatra); Banitan batu (Sumatra); Langolia mateote (Sumatra)

Scientific Name Synonyms

Alphonsea ceramica R. Scheffer.

Description Of The Tree

Botanical Description

It is a small to medium-sized tree up to 35 m tall and 57 cm in diameter. The bark surface is smooth.

Natural Distribution

This species is common in central Java.

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally vessels with colored deposits. Vessels per mm2 5 to 20. Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel Occasionally paratracheal axial parenchyma scanty and/or vasicentric. 3 to 4 cells per parenchyma strand. Axial parenchyma in narrow bands on lines up to 3 cells wide. 4 to 10 rays per mm (medium). Ray height more than 1 mm. Larger rays more than 4 seriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally oil and/or mucilage cells associated with the axial and/or ray parenchyma (idioblas Fibers with simple to minutely bordered pits.

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

Availability

Cites Status

Unrestricted

General Wood Description

Color

The sapwood is not clearly differentiated from the heartwood, which is light yellowish-brown.

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

6

Grain

The grain is usually straight.

Texture

The wood is reported to have a moderately fine to rather coarse texture.

Natural Durability

The wood is non-durable when exposed to the weather. The wood should be treated with anti-stain chemicals immediately after sawing.

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

5

Wood Physical Properties

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

0.70

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

0.79

Drying Defects

Ease of Drying: Drying is reported to be rapid without significant defects. Drying Defects: Cupping is reported when drying thin boards. Kiln Schedules: Durian wood is generally easy and rapid to kiln dry. It is recommended to air dry the timber for at least 2 weeks before kiln drying.

Wood Chemical Properties

Wood Mechanical Properties

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

1270

Stiffness (MOE) 12%MC (kgf/cm²)

152000

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

569

Workability

Sawing

Wood of this species is easy to cut.

Machining

Wood processing is reported to be easy.

Planing

This species is easy to plane.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, flooring, PLYWOOD AND VENEER, SPORTS, TOOLS, tool handles, agricultural tools

General Housing
  • 10 - Silica in Timbers
Flooring
  • 14 - Handbook of Hardwoods
Panels, Veneers
  • 25 - Directory of Timber Trade Malaysia
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

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