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Rengas
Gluta renghas L.
ANACARDIACEAE
Kayu rengas (Indonesia); Rangai (Indonesia); Inghas (Indonesia); Rengas tembaga (Indonesia); Rengas hutan (Indonesia); Rengas ayer (Malaysia); Rengas burung (Indonesia); Thayet-thitsi (Myanmar); Rak baan (Thailand); Rengas jitong (Malaysia); Rak khao (Thailand); Rengas merah (Indonesia); Rengas (Italy); Rengas (Spain); Rengas (France); Rengas (United Kingdom); Thitsi (Myanmar); Rengas (Sarawak); Rengas betul (Indonesia); Rengas perau (Indonesia); Rengas (Indonesia); Rengas (Sweden); Borneo rosewood (United Kingdom); Rak (Thailand); Rengas (Germany); Rengas (Malaysia); Son (Vietnam); Rengas (United States of America); Rengas (Netherlands); Gluta (India)
It is a medium-sized to large tree up to 50 m tall, with boles up to 115 cm in diameter, often multiple-stemmed and conically thickened at base. Buttresses are often present. This species yields a latex which is made into black lacquer, it is also poisono
Gluta renghas occurs gregariously along river banks in freshwater tidal beaches and in swamp forests without peat formation.
The sap of Rengas contains poisonous compounds which disappear gradually with drying. It might produce an adverse reaction on sensible individuals.
Tyloses common. Vessels per mm2 less than 6 (rare). Vessel-ray pits reticulate and/or foraminate. Simple perforation plates. Intervessel pits large, 10 micras or more. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma in narrow bands on lines up to 3 cells wide. Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Fibers with distinctly bordered pits.
Unrestricted
Odor and taste are indistinct.
The sapwood is clearly differentiated, white to pale yellow. The heartwood is dark reddish brown or deep blood red, streaked with darker colored zones.
4
It is partly straight, partly wavy, interlocked.
The texture varies from medium to coarse.
Timber of this species is moderate in luster.
The sapwood rapidly discolors and infested by insects if unprotected.
6
It is easy to treat with preservatives.
0.66
0.73
6.0
3.2
Ease of Drying: Boards of 13 mm and 38 mm thick can be dried in 2 months and 4 months, respectively. Drying Defects: There is a tendency to check, split and warp.
UK-E
1.9
925
123384
520
48
303
319
The behavior of this species in sawing is considered to be easy to slightly difficult.
For good results in slicing, steaming is required.
For good results in slicing, steaming is required.
Machining operations are rather easy, but slightly difficult when dry.
Planing of dry wood is reported to be easy to fair.
30
Boring operations are fair to difficult.
It is easy to nail.
Gluing behavior is reportedly good.
Wood of this species gives a good finish.
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