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NYATOH (Chrysophyllum lanceolatum)
Trade Name
Nyatoh
Scientific Name
Chrysophyllum lanceolatum (Blume) A. DC.
Family
SAPOTACEAE
Common Names
Nam phueng (Thailand); Dondong gisalakino (Indonesia); Hua tao (Thailand); Bai damnoeup (Cambodia); Than-kya-pin (Myanmar); Buka-buka (Philippines); Pulut-pulut (Malaysia); Khe phueng (Thailand); Pelai eilin (Indonesia); Ki baiyongbong (Indonesia); Kalalang (Philippines); Safng sasp (Vietnam); caay sajp (Vietnam); caay sown xa (Vietnam)
Scientific Name Synonyms
Nycterisition lanceolatum Blume; Donella lanceolata var. malagassica Aubrév.
Description Of The Tree
Botanical Description
The tree can reach up to 55 m in height and 85 cm in diameter. The boles are usually cylindrical, but often fluted at the base, branchless for 40 m.
Natural Habitat
This species occurs scattered or in small groups in primary rainforest, from the sea level up to 1,600 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels in diagonal and/or radial pattern. Occasionally vessels in radial multiples of 4 or more common. Occasionally vessel clusters common. Occasionally tangential diameter of vessel lumina 100 micras or less. Occasionally tyloses common Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally prismatic crystals in chambered axial parenchyma cells and/or in fibers. 3 to 4 cells per parenchyma strand. 5 to 8 cells per parenchyma strand. Occasionally axial parenchyma in n 4 to 10 rays per mm (medium). Occasionally rays more than 10 per mm (abundant). Occasionally larger rays more than 4 seriate. Body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Body ray cells procumbent with mostly 2 Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Odor
It has a faint sour scent.
Color
The heartwood is yellow-white or yellow-brown, not sharply demarcated from the sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
7
Grain
The grain is straight or shallowly interlocked.
Texture
The wood is typically fine in texture.
Natural Durability
This species is prone to blue stain and other biological attacks.
Natural durability index (1= Very high durability, 7=Vey low durability)
5
Resistance To Impregnation
The permeability for preservatives is low, but satisfactory under pressure.
Wood Physical Properties
Basic Density or Specific Gravity (O.D. weight/vol. green) (g/cm³)
0.45
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.49
Total shrinkage Tangential (Saturated to 0%MC) (%)
6.8
Total shrinkage Radial (Saturated to 0%MC) (%)
4.3
Drying Defects
Ease of Drying: Seasoning is rated as good. Drying Defects: It is highly susceptible to blue stain.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.6
Wood Chemical Properties
Wood Mechanical Properties
Bending Strength (MOR),12%MC (kgf/cm²)
917
Stiffness (MOE) 12%MC (kgf/cm²)
122280
Compression parallel to fiber 12%MC (kgf/cm²)
571
Compression perpendicular to fiber 12%MC (kgf/cm²)
71
Shear strength radial 12%MC (kgf/cm²)
92
Janka hardness (end grain) 12%MC (kgf)
561
Workability
Planing
The wood planes to a very smooth surface with little picking up even on radial faces.
Finishing
The wood needs little filling to give a good finishing.
Polishing
Polishing of this species is reportedly easy.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, boards, flooring, frames, panelling, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, TOOLS, tool handles, OTHER AND MUSICAL INSTRUMENTS, handicrafts, moldings
General Housing
- 10 - Silica in Timbers
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
Frames
- 16 - Woods of the World
Paneling
- 18 - W3TROPICOS Missouri Botanical Garden
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.
Tool Handles
- 43 - Maderas de Bolivia (Características y Usos de 55 Maderas Tropicales)
Handcraft
- 66 - Maderas latinoamericanas. VII. Caracteristicas anatomicas. propiedades fisicomecanicas, de secado, y tratabilidad de la madera juvenil de Cordia alliodora (Ruiz & Pav. Oken.)
Molding
- 79 - Padronização da Nomenclatura Comercial Brasileira das Madeiras Tropicais Amazônicas, Sugestão
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