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Simpoh
Dillenia indica L.
DILLENIACEAE
Simpur air (Indonesia); San (Cambodia); Thabyu (Myanmar); Handapara (Philippines); India katmon (Philippines); Simpoh kuning (Sarawak); Simpoh (Malaysia); San pao (Thailand); Sempu (Indonesia); Matat (Thailand); Sompru (Thailand); Sof baf (Vietnam)
Dillenia speciosa Thunb.; Dillenia elliptica Thunb.
It is a medium-sized to large evergreen tree up to 40 m tall. The bole is often rather crooked, branchless for up to 15 m. The diameter can be up to 120 cm, but it is often much less. The buttresses are absent or small.
Dillenia indica occurs in evergreen tropical rain forests, often along the rivers, up to 1,100 m of altitude.
This species is planted as ornamental in the Philippines.
Wood diffuse porous. Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Colored deposits in heartwood vessels. Occasionally tyloses common. Vessels per mm2 5 to 20. Intervessel pits scalariform. Vessel-ray p Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. 5 to 8 cells per parenchyma strand. Rays less than 4 per mm (rare). Rays of two distinct sizes. Ray height more than 1 mm. Larger rays more than 4 seriate. 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.
0.66
0.74
9.2
6.0
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.
UK-C
1.5
1032
134280
542
97
454
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 of this species is 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.
It is easy to finish to a smooth surface, but filling is necessary.
HOUSING GENERAL, beams, joists, flooring, frames, steps, panelling, FURNITURE AND CABINETS, PLYWOOD AND VENEER, Decorative veneer, TOOLS, tool handles, PACKING, pallets, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, moldings
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