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KAYU LASI (Adinauclea fagifolia)
Trade Name
Kayu lasi
Scientific Name
Adinauclea fagifolia (Teijsm. & Binnend. ex Havil.) Ridsd.
Family
RUBIACEAE
Common Names
Kilali (Indonesia); Kayu lasi (Indonesia)
Scientific Name Synonyms
Neonauclea fagifolia (Teijsm. & Binnend. ex Havil.; Nauclea fagifolia Teijsm. & Binnend. ex Havil.; Adina fagifolia (Teijsm. & Binnend. ex Havil.) Val
Description Of The Tree
Botanical Description
It is a large tree up to 45 m tall. The bole is branchless for up to 30 m, up to 200 cm in diameter.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 100 micras or less (very small). Vestured pits. Vessels per mm2 more than 20 (very abundant). Simple perforation plates. Vessel-ray pits similar to i Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. 3 to 4 cells per parenchyma strand. 5 to 8 cells per parenchyma strand. Rays more than 10 per mm (abundant). Occasionally larger rays more than 4 seriate. Occasionally sheath cells. 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 up Fibers very thick walled. Fibers with distinctly bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
Odor is distinct.
Color
The sapwood is slightly differentiated from the heartwood which is pale yellow to pink yellow, with whitish streaks, turning pale with age.
COLOR INDEX (1=Black, 7=Light yellow,white)
5
Grain
Straight or interlocked grain is common in this species.
Texture
The texture of the wood is fine.
Natural Durability
It is reported to be moderately durable, resistant to dry rot and termites attack.
Natural durability index (1= Very high durability, 7=Vey low durability)
3
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.6467598767
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.72
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.3
Total shrinkage Radial (Saturated to 0%MC) (%)
4.1
Drying Defects
Ease of Drying: Air seasoning is reported to be difficult. Girdling of standing trees is recommended to allow seasoning before felling. Drying Defects: Black portions of the wood are prone to checking. Kiln Schedules: Schedule proposed for Marblewood.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.8
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
952
Stiffness (MOE) 12%MC (kgf/cm²)
111000
Compression parallel to fiber 12%MC (kgf/cm²)
530
Shear strength radial 12%MC (kgf/cm²)
103
Workability
Machining
The machining of this species gives better results after seasoning.
Turning
30
Polishing
This species is reported to be easy to polish.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, joists, boards, flooring, steps, FURNITURE AND CABINETS, PLYWOOD AND VENEER, cores, TURNING, TOOLS, tool handles, CONTAINERS, cooperage, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts, pencil
General Housing
- 10 - Silica in Timbers
Joists
- 12 - Tropical timbers of the world. Part I-Tropical American Species
Boards
- 13 - Dry kiln schedules for commercial woods. Temperate and tropical. Section III. Latin American (Mexico, Central, and South America) Woods–Conventional Temperatures
Flooring
- 14 - Handbook of Hardwoods
Steps
- 17 - Tree Conservation Database
Furniture Cabinets
- 21 - Tropical timbers of the world. Part III-Southeast Asian and Oceanian Species.
Panels, Veneers
- 25 - Directory of Timber Trade Malaysia
Cores
- 27 - Embassy of Brazil in Japan
Turning
- 30 - Embassy of Honduras in Japan
Tools
- 42 - Utilización Industrial de Nuevas Especies Forestales en el Perú.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Containers
- 50 - Properties of imported tropical woods
Cooperage
- 51 - Recopilacion de propiedades mecanicas de maderas creciendo en Chile
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Pencils
- 67 - Maderas latinoamericanas. VIII, Calophyllum brasilense, Couratari panamensis, Dendropanax arboreum y Bombacopsis sessilis
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