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PENARAHAN (Myristica buchneriana)
Trade Name
Penarahan
Scientific Name
Myristica buchneriana Warb.
Family
MYRISTICACEAE
Common Names
Gaa gala (Indonesia); Madut (Papua New Guinea); Nogumur (Papua New Guinea); Ilis (Papua New Guinea)
Description Of The Tree
Botanical Description
It is a small to medium-sized tree up to 30 m tall.
Natural Habitat
Frequently found on ridge tops between 300 and 1,300 m, this tree is an important source of penarahan timber.
Wood Identification
Anatomic Description Of Wood
Tyloses common. Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits large, 10 micras or more. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma bands more than 3 cells wide. 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 distinctly bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is pale brown or brown to orange-brown and distinctly or indistinctly demarcated from the yellowish to pale brown sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
The grain is straight to slightly interlocked.
Texture
The texture is moderately coarse.
Luster
The wood is more or less lustrous.
Natural Durability
The wood is susceptible to subterranean termite and fungal attack, and indoors it is liable to dry-wood termite and powder-post beetle attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Resistance To Impregnation
The heartwood is reported to be extremely resistant to impregnation but the sapwood is treatable.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.39
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.42
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.2
Total shrinkage Radial (Saturated to 0%MC) (%)
4.6
Drying Defects
Ease of Drying: Seasoning is generally easy and rapid with little degrade. Drying Defects: Bowing and twisting are reported. Kiln Schedules: Kiln drying is fairly rapid under moderate schedules.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.6
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
734
Stiffness (MOE) 12%MC (kgf/cm²)
114587
Compression parallel to fiber 12%MC (kgf/cm²)
448
Shear strength radial 12%MC (kgf/cm²)
92
Janka hardness (side) 12%MC (kgf)
247
Workability
Sawing
Sawmilling of this species is reportedly easy.
Rotary Veneer Cutting
This timber is reported to be suitable for lamination.
Sliced Veneer
This timber is reported to be suitable for lamination.
Planing
Planing operations are rather easy.
Moulding
This species is easy to mold.
Boring
Boring operations are fair to difficult.
Mortising
It is easy to mortise.
Nailing
Nailing is reported as easy.
Gluing
Gluing of this species is easy.
Sanding
Wood of this species is easy to sand.
Finishing
Finishing gives smooth to moderately smooth surfaces.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, flooring, shutter boards, FURNITURE AND CABINETS, PLYWOOD AND VENEER, PACKING, OTHER AND MUSICAL INSTRUMENTS, handicrafts, cigar boxes, shoes, matches, moldings
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
Shutter Boards
- 20 - Prospect: The wood database
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Cigar Box
- 68 - Contribucion al conocimiento de la resistencia mecanica de la madera de peumo
Shoes
- 70 - Proprietes physiques et mecaniques des bois tropicaux de l`union francaise
Matches
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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