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ITANGAN (Weinmannia blumei)

Trade Name

Itangan

Scientific Name

Weinmannia blumei Planch.

Family

CUNONIACEAE

Common Names

Malayan mountain ash; Antahasi (Indonesia); Ki merak (Indonesia); Antahasi (Sumatra); Gringging (Indonesia)

Scientific Name Synonyms

Weinmannia sundana Miq; Weinmannia papuana Schlechter; Weinmannia ledermannii Schlechter

Description Of The Tree

Botanical Description

It is a small to medium-sized tree up to 25 m tall. The bole is up to 60 cm in diameter, sometimes with small buttresses.

Natural Habitat

Weinmannia blumei may occur gregariously. It is found in upper montane forests.

Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally tyloses common. Vessels per mm2 more than 20 (very abundant). Intervessel pits scalariform. Vessel-ray pits reticula Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Prismatic crystals in non-chambered axial parenchyma cells. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 4 to 10 rays per mm (medium). Occasionally rays of two distinct sizes. Occasionally body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square margi Fibers with distinctly bordered pits. Crystals in fibers.

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

Availability

Cites Status

Unrestricted

General Wood Description

Color

The heartwood is reddish-brown, chocolate-brown or purple-gray-brown, not clearly differentiated from the paler sapwood.

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

4

Grain

The grain varies from straight to deeply interlocked.

Texture

The texture of the wood is very fine to fine.

Luster

Timber of this species is lustrous.

Natural Durability

The wood is non-durable to moderately durable, susceptible to termites attack. When green it is prone to decay.

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

6

Wood Physical Properties

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

0.50

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

0.54

Drying Defects

Ease of Drying: Drying is moderately easy; some particular care is needed. Drying Defects: Risks of checks. Kiln Schedules: The kiln schedule has been tested.

Wood Chemical Properties

Wood Mechanical Properties

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

770

Stiffness (MOE) 12%MC (kgf/cm²)

114414

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

434

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

143

Shear strength radial 12%MC (kgf/cm²)

114

Janka hardness (side) 12%MC (kgf)

466

Janka hardness (end grain) 12%MC (kgf)

487

Workability

Machining

With care it can be worked to a good finish.

Turning

30

Finishing

With care wood of this species gives a smooth finish.

Polishing

It has a good polishing.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, beams, panelling, FURNITURE AND CABINETS, cabinets, TURNING

General Housing
  • 10 - Silica in Timbers
Beams
  • 11 - Prospect: The wood database
Paneling
  • 18 - W3TROPICOS Missouri Botanical Garden
Furniture Cabinets
  • 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Cabinet
  • 24 - Empire Timbers
Turning
  • 30 - Embassy of Honduras in Japan

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