Elateriospermum tapos Blume
Kedui (Indonesia); Pee-ra (Thailand); Kelampai (Sarawak); Dungku (Sarawak); Perah (Malaysia); Tapos (Indonesia); Pra (Thailand); Tapus
It is a deciduous or semi-deciduous, monoecious, small to medium-sized tree up to 30 m tall. The bole is often poorly shaped, sometimes sinuous, up to 60 cm in diameter, fluted at base or with small buttresses.
It is a monotypic genus. Elateriospermum tapos occurs in primary evergreen or semideciduous lowland and hill forests, up to 600 m of altitude.
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. Intervessel pits large, 10 micras or more. Paratracheal axial parenchyma scanty and/or vasicentric. Occasionally prismatic crystals in non-chambered axial parenchyma cells. Occasionally prismatic crystals in chambered axial parenchyma cells and/or in fibers. 5 to 8 cells per parenchyma strand. Over 9 4 to 10 rays per mm (medium). Rays more than 10 per mm (abundant). Occasionally body ray cells procumbent with over 4 rows of upright and/or square marginal cells (Kribs-I). Body ray cells procumbent with mostly 2 to 4 rows of upright and/or square marginal Fibers with simple to minutely bordered pits.
The heartwood is dark brown with a red tinge, sharply differentiated from the pale brown sapwood.
The grain is straight or shallowly interlocked.
The texture varies from moderately fine to medium.
The wood surface is described as moderate in luster.
It is perishable and apt to be infested by fungi or other wood degrading organisms.
This species is reported to respond very well to preservative treatment.
Ease of Drying: Seasoning is rated as moderately fast without degrade.
Sawing of this species is difficult. The saw-teeth get clogged easily with gums present in wood.
Planing of this species is fair.
Boring of this species is reported to be difficult.
This species is reported to give a smooth finish.
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