MALAPAPAYA (Polyscias nodosa)
Trade Name
Malapapaya
Scientific Name
Polyscias nodosa (Blume) Seem
Family
ARALIACEAE
Common Names
Ki langit (Indonesia); Malapapaya (Philippines); Panalatangen (Philippines); Bungliu (Philippines); Pata tulan (Indonesia); Kambowa (Indonesia); Bias-bias (Philippines)
Scientific Name Synonyms
Eupteron nodosa (Blume) Miq
Description Of The Tree
Botanical Description
It is a medium-sized tree growing to 30 m and attaining 50 cm in diameter. The bole is very long, cylindrical, with no buttresses or with very low, simple, rounded and inconspicuous buttresses.
Natural Habitat
Polyscias nodosa is found scattered in primary or more often in secondary evergreen or deciduous forests, up to 1,000 m of altitude.
Wood Identification
Anatomic Description Of Wood
Wood diffuse porous. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits large, 10 micras or more. Paratracheal axial parenchyma scanty and/or vasicentric. 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 to pinkish buff, not clearly differentiated from the sapwood.
Grain
Straight grain is reported in this species.
Texture
The wood is frequently reported to be fine textured.
Natural Durability
The wood is fairly durable for interior work, but very perishable when exposed to the weather or in contact with the ground. It is susceptible to dry wood termites.
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)
0.48
Air-dry Density (Weight and volume at 12%MC) (g/cm³)
0.52
Total shrinkage Tangential (Saturated to 0%MC) (%)
7.5
Total shrinkage Radial (Saturated to 0%MC) (%)
4.0
Drying Defects
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of checks.
Dimensional stability ratio (Total Tangential Shrinkage %/Total Radial Shrinkage %)
1.9
Wood Chemical Properties
Wood Mechanical Properties
Workability
Rotary Veneer Cutting
This species is reported to have good characteristics for lamination.
Sliced Veneer
This species is reported to have good characteristics for lamination.
Machining
Machining operations are rather easy.
REFERENCED USES
End Uses Summary
PLYWOOD AND VENEER, TOOLS, tool handles, PACKING, OTHER AND MUSICAL INSTRUMENTS, handicrafts, shoes, matches
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)
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.)
Shoes
- 70 - Proprietes physiques et mecaniques des bois tropicaux de l`union francaise
Matches
- 71 - Proprietes physiques et mecaniques des bois tropicaux, premier supplement
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