Cathormion umbellatum (M. Vahl) Kosterm.
Rakam pa (Thailand); Sambu:e sa:r (Cambodia); Lambaran (Indonesia); Lom (Indonesia); Kiutasi (Indonesia); Tieem (Vietnam); Me daast (Vietnam); Ma kham khaek (Thailand)
Pithecellobium umbellatum (Vahl) Benth.; Pithecellobium moniliferum (DC) Benthe.; Pithecellobium malayanum Pierre
It is a small, sometimes medium-sized tree up to 15 m tall. The bole is often short, crooked, up to 60 cm in diameter.
This species usually occurs in coastal regions, in particular on the drier parts of the mangrove forests and along the seashore up to 1,500 m of altitude.
Wood diffuse porous. Tangential diameter of vessel lumina 200 micras or more (large). Colored deposits in heartwood vessels. Vestured pits. Vessels per mm2 5 to 20. Vessels per mm2 less than 6 (rare). Simple perforation plates. Vessel-ray pits similar to interve Occasionally apotracheal axial parenchyma diffuse and/or diffuse in aggregates. Occasionally paratracheal axial parenchyma scanty and/or vasicentric. Axial parenchyma aliform. Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells 4 to 10 rays per mm (medium). Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Septate fibers present. Crystals in fibers. Fibers with simple to minutely bordered pits.
The heartwood is pale to dark brown, sharply demarcated from the white to yellowish-white sapwood.
The grain is reported to be straight or wavy.
The texture varies from moderately coarse to coarse and even.
It is slightly durable in contact with the ground or exposed to the weather, but durable when used under cover.
Ease of Drying: Air seasoning is fairly easy. Drying Defects: Tendency to check and split in air drying.