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NYATOH (Diploknema sebifera)
Trade Name
Nyatoh
Scientific Name
Diploknema sebifera Pierre
Family
SAPOTACEAE
Common Names
Merading (Indonesia); Nyatoh puteh (Sabah); Nyatoh kekabu (Malaysia); Putat (Indonesia); Nyatoh kalan (Indonesia)
Description Of The Tree
Botanical Description
It is an evergreen, medium-sized to large trees up to 48 m tall. The bole is columnar, up to 115 cm in diameter, without buttresses.
Natural Habitat
This species is reported to grow in primary forests, on sandy or loamy soils, up to 300 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Occasionally vessels in radial multiples of 4 or more common. Occasionally vessels with colored deposits. Tyloses common. Vessels per mm2 less than 6 (rare). Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervesse Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Crystal sand. 3 to 4 cells per parenchyma strand. Occasionally 5 to 8 cells per parenchyma strand. Axial parenchyma in narrow bands on l 4 to 10 rays per mm (medium). Ray height more than 1 mm. 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 upright and/or square marginal cells (Kribs-II). Fibers with simple to minutely bordered pits.
Availability
Cites Status
Unrestricted
General Wood Description
Color
The heartwood is reddish-brown, not sharply demarcated from the pale red sapwood.
COLOR INDEX (1=Black, 7=Light yellow,white)
4
Grain
The grain is straight, occasionally wavy.
Texture
The texture varies from rather fine to coarse.
Natural Durability
It is moderately durable for interior use and non-durable to moderately durable when exposed to the weather or in contact with the ground.
Natural durability index (1= Very high durability, 7=Vey low durability)
6
Wood Physical Properties
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.52
Total shrinkage Tangential (Saturated to 0%MC) (%)
3.2
Drying Defects
Ease of Drying: The wood dries fairly slowly. Boards 15 mm thick take 2.5 to 4 months to air dry from green to 15% moisture content. Drying Defects: Slight bowing and staining are reported. Kiln Schedules: Schedule recommended for Litsea.
Wood Chemical Properties
Wood Mechanical Properties
Workability
Machining
The wood is soft and easy to work.
REFERENCED USES
End Uses Summary
HOUSING GENERAL, flooring, FURNITURE AND CABINETS, cabinets, PLYWOOD AND VENEER, PACKING, NAVAL CONSTRUCTION, boats
General Housing
- 10 - Silica in Timbers
Flooring
- 14 - Handbook of Hardwoods
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
Packing
- 45 - Recopilación y Análisis de Estudios Tecnológicos de Maderas Peruanas
Shipbuilding
- 55 - Tropical Timber Atlas of Latin America
Boats
- 56 - Manual de Identificación de Especies Forestales de la Subregión Andina.
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