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DWABOK (Kydia calycina)
Trade Name
Dwabok
Scientific Name
Kydia calycina Roxb.
Family
MALVACEAE
Common Names
Pulu (India); Pula (India); Chourpultea (India); Magan (Myanmar); Dwalok (Myanmar); Dwabote (Myanmar); Baluma-shaw (Myanmar); Kuhuka (India); Dwabok (Myanmar)
Scientific Name Synonyms
Kydia roxburghiana Wight; Kydia fraterna Roxb.
Description Of The Tree
Botanical Description
Small to medium sized tree up to 12 to 15 m tall, with a clear bole up to 6 m long. The diameter may be up to 100 cm.
Natural Habitat
Kydia calycina is reported to grow in a wide range of habitats, but arid regions. It is common in the deciduous forests of India and the sub-Himalayan tract. In China it is found at altitudes between 500 to 1,600 m
Natural Distribution
It is grows widely distributed in India and Myanmar, also reported in southern China and northern Vietnam.
Wood Identification
Anatomic Description Of Wood
Occasionally wood semi-ring porous and/or ring porous. Occasionally tangential diameter of vessel lumina 200 micras or more. Occasionally tangential diameter of vessel lumina 100 micras or less. Vestured pits. Occasionally vessels per mm2 more than 20. Occasio Occasionally paratracheal axial parenchyma scanty and/or vasicentric. Occasionally axial parenchyma aliform. Axial parenchyma confluent. Two cells per parenchyma strand. 3 to 4 cells per parenchyma strand. Occasionally 5 to 8 cells per parenchyma strand. Occasi Rays exclusively uniseriate. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally 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
Color
The wood is described as brownish grey to whitish grey. The heartwood is sharply differentiated from the softwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
6
Grain
The grain is usually straight.
Texture
The texture of this species is reported to vary from medium to coarse.
Luster
The wood is lustrous when quarter sawn.
Natural Durability
This timber is reportedly non resistant to biological attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.33
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.35
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
483
Stiffness (MOE) 12%MC (kgf/cm²)
72700
Compression parallel to fiber 12%MC (kgf/cm²)
237
Workability
Rotary Veneer Cutting
It is suitable for plywood and veneer production.
Sliced Veneer
It is suitable for plywood and veneer production.
Machining
It is easy to work, giving a good surface.
Response To Hand Tools
It is easy to work with hand tools.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, PLYWOOD AND VENEER, TOOLS, agricultural tools, PACKING, light packing, NAVAL CONSTRUCTION, boat oars, OTHER AND MUSICAL INSTRUMENTS, pencil, matches
General Housing
- 10 - Silica in 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
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Light Packing
- 46 - ECUADOR, Inventario y Aprovechamiento de los Bosques del Sur Ecuatoriano
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boat Oars
- 60 - Amazonian Timbers, Characteristics and Utilization Volume II; Curuá-Una Experimental Forest Station
Pencils
- 67 - Maderas latinoamericanas. VIII, Calophyllum brasilense, Couratari panamensis, Dendropanax arboreum y Bombacopsis sessilis
Matches
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
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