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Rengas
Gluta wallichii (Hook.f.) Ding Hou
ANACARDIACEAE
Rengas (United States of America); Rengas merah (Indonesia); Rengas (United Kingdom); Thitsi (Myanmar); Rengas perau (Indonesia); Rengas pendek (Indonesia); Rak (Thailand); Rengas (Sweden); Son (Vietnam); Borneo rosewood (United Kingdom); Rengas (Spain); Rengas (Netherlands); Rengas (Malaysia); Gluta (India); Rengas (France); Rengas (Italy); Rengas (Indonesia); Rengas (Sarawak); Rengas betul (Indonesia); Rengas (Germany)
Melanorrhoea woodsiana Scort. Ex King; Melanorrhoea wallichii Hook.f.; Melanorrhoea maingayi Hook.f.
It is a large evergreen tree, up to 45 m tall and 90 cm in diameter. Buttresses up to 4 m high are reported. This species yields a latex which is made into black lacquer, it is also poisonous and causes severe skin irritation.
It is widely distributed in mixed dipterocarp forests and swamp forests, up to 1,000 m of altitude. In Malaysia it is common on hillsides, in Sumatra it is co-dominant in peat swamp forests.
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Tyloses common. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Axial parenchyma in marginal or in seemingly marginal bands. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. Rays less than 4 per mm (rare). Body ray cells procumbent with one row of upright and/or square marginal cells (Kribs-III). Septate fibers present. Fibers with distinctly bordered pits.
Unrestricted
The sapwood is clearly differentiated, white to pale yellow. The heartwood is dark reddish brown or deep blood red shiny marked with dark streaks.
5
It is partly straight, partly wavy, interlocked.
Texture is mostly fine to medium.
The wood surface is moderate in luster.
The sapwood rapidly discolors and attacked by insects if unprotected.
4
It is difficult to impregnate.
0.60
0.66
Ease of Drying: Air seasoning is reported without degrade. Boards of 13 mm and 38 mm thick take respectively 2.5 months and 3.5 months to air dry.
Cutting resistance is generally low.
For good results in slicing, steaming is required.
For good results in slicing, steaming is required.
It is easy to machine.
30
This species is reported to have a good nailing behavior.
The timber is reported to glue well.
Wood of this species is easy to finish.
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