Senna siamea (Lam.) H.S. Irwin & Barneby
Johar (Sumatra); Khi lek ban (Thailand); Johor (Malaysia); Khi lek (Laos); Angkanh (Cambodia); Thailand shower (Philippines); Juah (Malaysia); Johar (Indonesia); Thai copper pod; Kassod tree; Phak chili (Thailand); Petai belalang (Malaysia)
Sciacassia siamea (Lam.) Britton; Chamaefistula gigantea G. Don; Cassia siamea var. puberula Kurz; Cassia siamea Lam.; Cassia gigantea Bertero ex DC.; Cassia florida Vahl; Cassia arborea Macfad.
It is described as a small to medium sized tree, up to 20 m tall, the bole is usually short, up to 50 cm in diameter.
Senna siamea is reported along roadsides and riverbanks. It occurs in different types of lowland forests.
It is planted throughout the tropics, in Vietnam is used for fuel-wood plantations.
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 Axial parenchyma confluent. Prismatic crystals in chambered axial parenchyma cells and/or in fibers. Occasionally two cells per parenchyma strand. 3 to 4 cells per parenchyma strand. Occasionally 5 to 8 cells per parenchyma strand. Axial parenchyma bands more 4 to 10 rays per mm (medium). Homogeneous rays and/or sub-homogeneous rays (all ray cells procumbent). Occasionally septate fibers present. Fibers very thick walled. Fibers with simple to minutely bordered pits.
Its odor and taste is not distinct.
The sapwood is white, distinct. The heartwood is reddish-brown, dark brown to almost black.
This species is typically reported to have wavy or interlocked grain.
This species is reported to have a fine to medium texture.
It is reported to be lustrous.
The heartwood is reported to be resistant to termites.
Silica Content: Silica content is negligible. Silica Value: 0
S. siamea wood is permeable to preservative substances.
Ease of Drying: Drying is rather slow and sometimes difficult to perform. Drying Defects: Risks of distortions.
This species is difficult to machine.
The wood has a tendency to pick up in planing.
It takes a high finish.
Polishing of this wood is easy.
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