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HAPLOLOBUS (Haplolobus floribundus)

Trade Name

Haplolobus

Scientific Name

Haplolobus floribundus (K. Schumann) H.J. Lam

Family

BURSERACEAE

Common Names

Ode mayoko (Indonesia); Lian (Indonesia); Enei (Indonesia)

Scientific Name Synonyms

Haplolobus moluccanus H.J Lam; Haplolobus leeifolius (Lauterb.) H.J Lam; Haplolobus celebicus H.J. Lam

Description Of The Tree

Botanical Description

It is a dioecious, small to medium-sized tree up to 30 m tall. The bole is straight, branchless for up to 20 m, up to 60 cm in diameter, sometimes with small buttresses.

Natural Habitat

Haplolobus floribundus is found mostly scattered in primary, rarely secondary rainforest, from the sea level up to 1,980 m of altitude. It is most common on hills and ridges, and it generally occurs on well drained, alluvial or clayey soils.

Non Timber Uses

H. floribundus wood is reported to have an exceptional wide range of density variation, from 0.34 up to 1.24 g/cm3 in air dried condition.

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Wood Identification

Anatomic Description Of Wood

Wood diffuse porous. Tangential diameter of vessel lumina 100 micras or less (very small). Colored deposits in heartwood vessels. Vessels per mm2 more than 20 (very abundant). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and s Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Occasionally axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells 4 to 10 rays per mm (medium). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). 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 heartwood varies from pale brown to pink brown. Denser material usually a little darker in color, not clearly demarcated from the sapwood.

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

5

Grain

This timber usually has straight or wavy grain.

Texture

Texture is usually medium to coarse.

Natural Durability

This species is prone to blue stain, early anti-stain treatment is recommended.

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)

0.52

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

0.57

Drying Defects

Ease of Drying: The timber air dries rather slowly, usually without serious defects. Boards 12.5 mm thick take about 3 months to air dry. Drying Defects: Slight checking and end splitting may occur.

Wood Chemical Properties

Wood Mechanical Properties

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

397

Stiffness (MOE) 12%MC (kgf/cm²)

46415

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

428

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

76

Shear strength radial 12%MC (kgf/cm²)

127

Janka hardness (side) 12%MC (kgf)

567

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

567

Workability

Rotary Veneer Cutting

This species can be used for lamination.

Sliced Veneer

This species can be used for lamination.

REFERENCED USES

End Uses Summary

HOUSING GENERAL, PLYWOOD AND VENEER

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

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