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Simpoh
Dillenia papuana Martelli
DILLENIACEAE
Kamyemeye (Indonesia); Mayonga (West Irian); Mayonga (Indonesia); Kaigabar (Indonesia)
Wormia papuana (Martelli) Gilg & Werderm.; Wormia calothyrsa (Diels) Gilg & Werderm.; Dillenia calothyrsa Diels
It is a medium-sized to large evergreen tree up to 40 m tall, with bole branchless for up to 20 m and up to 100 cm in diameter, with or without buttresses.
Dillenia papuana is found in primary forests at low altitude, rarely up to 2,000 m of altitude.
Wood diffuse porous. Vessels exclusively solitary (over 90%). Vessels per mm2 5 to 20. Vessel-ray pits reticulate and/or foraminate. Vessel-ray pits similar to intervessel pits in size and shape. Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Axial parenchyma scalariform. Larger rays more than 4 seriate. Sheath cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers with distinctly bordered pits.
Unrestricted
The heartwood is red-brown to dark reddish-brown, sometimes with a purplish tinge, and usually not demarcated from the slightly paler sapwood.
4
The grain is straight or, more usually, interlocked.
The texture is moderately coarse and even.
The wood is susceptible to dry-wood termites, blue stain and decay fungi.
4
Silica Content: It contains 0.1% silica.
It can be readily impregnated with preservative substances.
0.60
0.66
8.8
4.1
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.
UK-C
2.1
Sawdust can block the blades.
It possible to produce decorative sliced veneer.
It possible to produce decorative sliced veneer.
This species is easy to machine.
It is easy to plane.
Boring operations are reported to be easy to fair.
It needs pre-bore for nails, but it screws well. The nail holding properties are poor.
Gluing of this species is easy.
Finishing of this wood is rated as fair.
HOUSING GENERAL, panelling, PLYWOOD AND VENEER, OTHER AND MUSICAL INSTRUMENTS, moldings
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