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MEDANG (Persea rimosa)
Trade Name
Medang
Scientific Name
Persea rimosa Zoll. ex Meissner
Family
LAURACEAE
Common Names
Huru gambir (Indonesia); Huru puspa (Indonesia); Wuru janggel (Indonesia)
Scientific Name Synonyms
Machilus rimosa (Blume) Blume
Description Of The Tree
Botanical Description
It is an evergreen, small to medium-sized trees up to 30 m tall. The bole is usually fairly straight, branchless for 20 m, up to 80 cm in diameter, sometimes with small buttresses.
Natural Habitat
Persea species occur in primary evergreen lowland to lower montane forests, up to 1,500 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally vessel clusters common. Tangential diameter of vessel lumina 100 micras or less (very small). Occasionally vessels with colored deposits. Tyloses common. Vessels per mm2 5 to 20. Vessels per mm2 more than 20 (very abundant). Ves Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally two cells per parenchyma strand. 3 to 4 cells per parenchyma strand. 4 to 10 rays per mm (medium). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Septate fibers present. Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
It has cedar odor when freshly sawn.
Color
The heartwood is pale red-brown, pink-yellow or dark olive-buff, moderately sharply differentiated from the sapwood, which is pale yellow or straw-colored with a slight green tinge.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The grain is reported to be straight or interlocked.
Texture
The texture is typically fine to moderately fine.
Luster
The wood surface is described as lustrous.
Natural Durability
The durability is variable from moderately durable to durable.
Natural durability index (1= Very high durability, 7=Vey low durability)
4
Resistance To Impregnation
The sapwood of Medang is amenable to preservative treatment, but the heartwood is impermeable.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.62
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.69
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.9
Total shrinkage Radial (Saturated to 0%MC) (%)
3.4
Drying Defects
Drying Defects: Slight cupping, bowing and end-checking may occur.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
2.3
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
842
Stiffness (MOE) 12%MC (kgf/cm²)
120300
Compression parallel to fiber 12%MC (kgf/cm²)
451
Compression perpendicular to fiber 12%MC (kgf/cm²)
102
Shear strength radial 12%MC (kgf/cm²)
102
Janka hardness (side) 12%MC (kgf)
338
Janka hardness (end grain) 12%MC (kgf)
446
Workability
Rotary Veneer Cutting
This species is reported to have good characteristics for lamination.
Sliced Veneer
This species is reported to have good characteristics for lamination.
Machining
This species is easy to machine.
Response To Hand Tools
This wood carves well.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TOOLS, agricultural tools, OTHER AND MUSICAL INSTRUMENTS, handicrafts
General Housing
- 10 - Silica in Timbers
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.
Agricultural Tools
- 44 - Atlas of Peruvian Woods
Other & Musical Instruments
- 63 - Madeiras do Brazil II
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
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