| | Commercial timbers |
Nomenclature etc. FABACEAE-CAESALPINIOIDEAE. Trade and local names: hampas, pah, mengris, impas, toemaling, garis, ajam (ID). Not protected under CITES regulations.
Tree. Geographic distribution: Indomalesia.
General. Growth ring boundaries distinct or indistinct or absent. If visible demarcated by fine marginal bands. Heartwood basically brown to red, brown to yellow; without streaks. Sapwood colour distinct from heartwood colour. Density 0.7–0.82–0.9 g/cm³.
Vessels. Wood diffuse porous. Vessels in multiples, commonly in short (2–3 vessels) radial rows. Average tangential vessel diameter 196–255–314 µm. Average number of vessels/mm² 3–4. Average vessel element length 310–510–670 µm. Perforation plates simple. Intervessel pits alternate, pits vestured. Vessel-ray pits with distinct borders, similar to intervessel pits. Other deposits present (brown).
Tracheids and fibres. Fibres of medium wall thickness to very thick-walled. Fibre pits mainly restricted to radial walls, simple to minutely bordered.
Axial parenchyma. Axial parenchyma banded or not banded. Bands marginal (or seemingly marginal). Bands fine. Axial parenchyma paratracheal. Paratracheal axial parenchyma aliform and confluent. Aliform parenchyma of the lozenge type. Axial parenchyma as strands. Average number of cells per strand: 6–9.
Rays. Rays multiseriate, 2 cells wide (few 3-seriates). Height of large rays up to 500 µm. Rays composed of two or more cell types (heterocellular). Heterocellular rays with square and upright cells restricted to marginal rows, mostly 1 marginal row of upright or square cells.
Storied structures. Storied structure present, all rays storied, axial parenchyma storied or not storied, vessel elements storied or not storied, fibres storied or not storied.
Cambial variants. Included phloem present (streaks of very hard and brittle, stone-like tissue), diffuse.
Mineral inclusions. Crystals present, prismatic, located in axial parenchyma cells. Crystal-containing axial parenchyma cells not chambered. Number of crystals per cell or chamber more than one. Silica not observed.
Illustrations. • Transverse section. • Tangential section. • Radial section.
The interactive key allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting specified attributes, summaries of attributes within groups of taxa, and geographical distribution.
Cite this publication as: ‘Richter, H.G., and Dallwitz, M.J. 2000 onwards. Commercial timbers: descriptions, illustrations, identification, and information retrieval. In English, French, German, Portuguese, and Spanish. Version: 9th April 2019. delta-intkey.com’.
