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Palapi
Heritiera simplicifolia Masters
Sterculiaceae
Mengkulang (France); Mengkulang (Sarawak); Mengkulang (United Kingdom); Don-chem (Cambodia); Mengkulang (Germany); Mengkulang (Italy); Red/brown tulip oak (Australia); Kembang (Sabah); Huynh (Vietnam); Lumbayau (Philippines); Teraling (Indonesia); Palapi (Indonesia); Mengkulang (Malaysia); Chumprag (Thailand); Kanze (Myanmar)
Tarrietia simplicifolia Masters
It is a large tree, up to 50 m tall with straight and columnar bole up to 135 cm in diameter. The buttresses are large.
It is the most important species belonging to the "Mengkulang" group. This species occurs scattered in lowland mixed dipterocarp forests, on well drained soil, up to 300 m of altitude.
It is distributed in Malay Peninsula, Sumatra, Borneo. In Sabah, it is also widespread.
Vessels per mm2 less than 6 (rare). Wood diffuse porous. Colored deposits in heartwood vessels. Tangential diameter of vessel lumina 200 micras or more (large). Vessel-ray pits similar to intervessel pits in size and shape. Simple perforation plates. Simple per Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma in marginal or in seemingly marginal bands. Siliceous bodies in the axial parenchyma cells. Axial parenchyma in narrow Rays storied. 4 to 10 rays per mm (medium). Larger rays more than 4 seriate. Silica bodies in the ray cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Sheath cells. Occasionally body ray cells procumbe Fibers with distinctly bordered pits. Fibers storied.
Unrestricted
It has unpleasant odor when fresh.
The sapwood is not always clearly distinct, it varies in color from light yellow to light reddish. The heartwood is pale pink when fresh, in strong light darkens to dark red-brown.
5
It is straight to shallowly interlocked.
The texture varies from medium to moderately coarse, vessels contain dark deposits.
The heartwood is slightly lustrous.
It is moderate-perishable and somewhat susceptible to fungi and insect attack.
6
Silica Content: It is reported to have silica. Contents over 0.05% may affect wood processing. Silica Value: 0
This species is reported to be moderately difficult to preserve.
0.67
0.75
6.4
3.1
Ease of Drying: Seasoning is reported to be rather difficult. Drying Defects: It is likely to warp and split.
UK-D; US-32-22; JP-17
2.1
975
146087
543
56
92
409
656
Sawing of this wood is reported to be fair to difficult.
Good veneer can be made at a peeling angle of 92 degrees without pretreatment, but steaming is recommended.
Good veneer can be made at a peeling angle of 92 degrees without pretreatment, but steaming is recommended.
Blunting effect on cutting tools is reported due to the silica content.
Interlocked grain hinders machining operations, and special cutters are required.
Care is needed when planing quarter-sawn timber in order to avoid the grain picking up. Using a cutting angle of 20 degrees usually produces a smooth finish.
Nail-holding is good, pre-boring is recommended to avoid splitting.
Gluing properties are good. The use of urea-formaldehyde glues is recommended.
It is easy to finish.
Wood of this species is easy to polish.
EXTERIOR GENERAL, poles, crossties, HOUSING GENERAL, boards, flooring, frames, panelling, FURNITURE AND CABINETS, PLYWOOD AND VENEER, TOOLS, tool handles, PACKING, CONTAINERS, cooperage, truck bodies, truck flooring, NAVAL CONSTRUCTION, boat hulls, boat deck, OTHER AND MUSICAL INSTRUMENTS, handicrafts
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