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Merpauh
Swintonia spicifera Hook.f.
ANACARDIACEAE
Merpauh daun tebal (Malaysia); Kerete (Indonesia); Rengas kilat senja (Malaysia); Mupus (Malaysia); Muom (Cambodia); Thayet-kin (India); Civit (Pakistan); Muom (Vietnam); Civit taungthayet (Myanmar); Taung thayet (Myanmar); Merpau (Malaysia)
It is a medium-sized to fairly large tree up to 36 m tall. The bole is up to 80 cm in diameter. The buttresses are rather tall, occasionally 4 m high.
Swintonia spicifera is found in lowland and hill forests, sometimes growing gregariously on ridges up to 500 m of altitude.
Vessels per mm2 5 to 20. Wood diffuse porous. Tyloses common. Tangential diameter of vessel lumina 200 micras or more (large). Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits large, 10 micras or more. Axial parenchyma in marginal or in seemingly marginal bands. Axial parenchyma reticulate. Axial parenchyma in narrow bands on lines up to 3 cells wide. 4 to 10 rays per mm (medium). Rays exclusively uniseriate. Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent).
Unrestricted
The sapwood is almost indistinguishable. The heartwood occasionally turns reddish brown.
5
It is mostly straight, occasionally wavy.
It is moderately coarse but uniform.
It is perishable and susceptible to blue stain.
5
Residual stresses present in the wood may cause defects while processing the timber.
Silica Content: It is reported to have silica. Contents over 0.05% may affect wood processing. Silica Value: 0
It has a good absorption of preservative substances.
0.67
0.75
1.8
0.9
Ease of Drying: Drying is fairly easy; some difficulties could occur when drying too fast. Drying Defects: Risks of collapse. Kiln Schedules: The kiln schedule has been tested.
UK-C
2.0
1099
184220
578
137
613
Wood of this species is easy to cut unless tension wood is present.
This species can be used for lamination.
This species can be used for lamination.
It has a severe blunting effect on the cutting tools. The wood jams the saw-blades.
Machining of this species is reported to be easy.
It is easy to plane.
Boring operations are rather difficult.
Nailing properties of this wood are reported as good to fair.
It is reported to be easy to glue.
This species is reported to give good to moderate results in finishing.
Steam bending of this species is reportedly easy.
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