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Amberoi
Pterocymbium beccarii K. Schumann
STERCULIACEAE
Po-ikeng (Thailand); Amberoi (Papua New Guinea); Taluto (Sabah); Taluto (Philippines); Papita (Indonesia)
Pterocymbium stipitatum C.T. White & Francis
It is a large tree up to 50 m tall. The bole is branchless for up to 33 m, 120 cm in diameter. The buttresses are absent or with spur roots or with tall buttresses up to 4 m high.
Pterocymbium beccarii is found in lowland rain forest, especially on ridges, or on alluvial or swampy soils, up to 750 m of altitude.
Vessels exclusively solitary (over 90%). Tangential diameter of vessel lumina 200 micras or more (large). Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to intervessel pits in size and shape. Intervessel pits small, 7 mi Apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma storied. 3 to 4 cells per parenchyma strand. Rays less than 4 per mm (rare). Rays of two distinct sizes. Ray height more than 1 mm. Sheath cells. Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal cells (Kribs-II). Fibers very thin walled. Fibers with simple to minutely bordered pits. Fibers storied.
Unrestricted
It has no taste or odor.
The sapwood is whitish or yellow, only clearly differentiated when fresh. The heartwood is cream colored.
7
The grain is frequently straight.
The texture varies from medium to coarse.
The wood surface is dull.
It is perishable, risk of blue stain is reported.
5
Silica Content: It is non-siliceous. Silica Value: 0
Stock absorbs preservatives readily.
0.35
0.37
7.6
2.9
Ease of Drying: Drying is rather slow and sometimes difficult to perform.
US-52-53; JP-21
2.6
496
85622
306
59
161
It is moderately easy to cut, the wood it is somewhat fibrous.
This timber is reported to be suitable for lamination.
This timber is reported to be suitable for lamination.
This species is easy to machine.
Planing is reported to be easy.
30
The nail holding properties are moderate.
Gluing behavior is reportedly good.
It has a good finishing.
The steam bending properties are satisfactory.
This species is easy to work with hand tools.
HOUSING GENERAL, shutter boards, FURNITURE AND CABINETS, PLYWOOD AND VENEER, faces, cores, TURNING, PACKING, NAVAL CONSTRUCTION, OTHER AND MUSICAL INSTRUMENTS, handicrafts, shoes, matches, moldings, paper
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