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MEMINA (Pimelodendron amboinicum)

Trade Name

Memina

Scientific Name

Pimelodendron amboinicum Hassk.

Family

EUPHORBIACEAE

Common Names

Pokopokor (Indonesia); Pamum (Indonesia); Mamina (Indonesia)

Scientific Name Synonyms

Pimelodendron papuanum Warb; Daphniphyllum conglutinosum Hemsl.

Description Of The Tree

Botanical Description

It is an evergreen, dioecious, small to medium-sized tree up to 30 m tall. The bole is branchless for up to 15 m, with diameters of 80 cm, often fluted at base.

Natural Habitat

Pimelodendron amboinicum grows scattered in primary lowland to submontane evergreen rain forests up to 1,800 m of altitude. It is often found on sites where natural disturbances have occurred.

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Occasionally vessels in radial multiples of 4 or more common. Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally tyloses common. Vessels per mm2 5 to 20. Vessels per mm2 less than 6 (rare). Simple perforation Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Over 9 cel Rays more than 10 per mm (abundant). Ray height more than 1 mm. Occasionally silica bodies in the ray cells. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Occasionally body ray cells procumbent with mostly 2 to Fibers with simple to minutely bordered pits.

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

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is cream, pale yellow-brown or gray-white, not clearly differentiated from the sapwood.

Grain

It has straight grain.

Texture

Texture of this species is moderately fine and even.

Natural Durability

It has very little or no natural resistance to decay when in contact with the ground.

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

5

Resistance To Impregnation

The timber is reported to respond very well to preservative treatment.

Wood Physical Properties

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

0.60

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

0.66

Total shrinkage Tangential (Saturated to 0%MC) (%)

8.1

Total shrinkage Radial (Saturated to 0%MC) (%)

3.9

Drying Defects

Ease of Drying: Boards of X. fusca 13 mm and 38 mm thick take respectively 3 and 5 months to air dry. Drying Defects: There is moderate risk of cupping, bowing and stain.

Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)

2.1

Wood Chemical Properties

Wood Mechanical Properties

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

1009

Stiffness (MOE) 12%MC (kgf/cm²)

131808

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

550

Shear strength radial 12%MC (kgf/cm²)

117

Workability

Sawing

Sawing of this species is moderately easy.

Rotary Veneer Cutting

Lamination of this species is possible.

Sliced Veneer

Lamination of this species is possible.

Machining

Machining properties are fair when the stock is green, but it is rated as poor when air-dry.

Substitute Species

It is considered as a possible substitute for Ramin (Gonystylus spp.)

REFERENCED USES

End Uses Summary

HOUSING GENERAL, FURNITURE AND CABINETS, PLYWOOD AND VENEER, TOOLS, tool handles, OTHER AND MUSICAL INSTRUMENTS, moldings

General Housing
  • 10 - Silica in Timbers
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
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)
Molding
  • 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão

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