Paraserianthes falcataria (L.) Nielsen (Jeungjing)
Nomenclature etc. MIMOSACEAE. Synonyme: Albizia falcata, A. falcataria, A. moluccana. Trade and local names: Batai, jeungjing, sengon laut, sika (RI); kayu machis (MAL-Sar); white albizia (PNG); Moluccan sau, falcata (PI).
Tree. Geographic distribution: Thailand, Laos, Vietnam, Cambodia and Indomalesia.
General. Growth ring boundaries indistinct or absent. Heartwood basically white or grey, without streaks. Sapwood colour similar to heartwood colour. Basic specific gravity 0.23–0.3–0.5 g/cm³. In Southeast Asia widely planted for industrial timber.
Vessels. Wood diffuse-porous. Vessels in multiples, commonly short (2–3 vessels) radial rows. Average tangential vessel diameter 160–340 µm. Average number of vessels/mm² 1–3(–4). Perforation plates simple. Intervessel pits alternate, average diameter (vertical) 5–8 µm, vestured. Vessel-ray pits with distinct borders, similar to intervessel pits. Helical thickenings absent. Tyloses in vessels absent.
Tracheids and fibres. Fibres very thin-walled. Average fibre length 1200–1500 µm. Fibre pits mainly restricted to radial walls, simple to minutely bordered. Fibres non-septate.
Axial parenchyma. Axial parenchyma not banded. Axial parenchyma apotracheal, or paratracheal. Apotracheal axial parenchyma diffuse. Paratracheal axial parenchyma scanty, or vasicentric. Axial parenchyma as strands.
Rays. Rays 6–12 per tangential mm, multiseriate, also if only few, 1–2 cells wide. Rays with multiseriate portions as wide as uniseriate portions absent. Rays composed of a single cell type. Homocellular ray cells procumbent.
Storied structures. Storied structure absent.
Secretory structures. Intercellular canals absent.
Mineral inclusions. Crystals present, prismatic, located in axial parenchyma cells. Crystal-containing axial parenchyma cells chambered. Number of crystals per cell or chamber one. Silica not observed.
Cite this publication as: H. G. Richter and M. J. Dallwitz (2000 onwards). 'Commercial timbers: descriptions, illustrations, identification, and information retrieval.' In English, French, German, and Spanish. Version: 4th May 2000. http://biodiversity.uno.edu/delta/.
Dallwitz (1980) and Dallwitz, Paine and Zurcher (1993 onwards, 1995 onwards, 1998) should also be cited (see General references).