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Nomenclature etc. MORACEAE. A. lanceifolius Roxb., A. ovatus Blanco, A. rigidus, Artocarpus spp. The trade timber 'keledang' consists of these and other heavy and dark coloured species. Trade and local names: selangking, beruni (MY); selangking, tambang, basang (ID); kapiak (PG); anubing (PH); khanun, hat, mahat (TH). Not protected under CITES regulations.
Tree. Geographic distribution: India, Pakistan, Sri Lanka, Myanmar (Burma), Thailand, Laos, Vietnam, Cambodia, Indomalesia.
General. Heartwood basically brown, green (heartwood dark olive to blackish brown). Sapwood colour distinct from heartwood colour. Density 0.6–0.85 g/cm³.
Vessels. Wood diffuse porous. Vessels arranged in no specific pattern, in multiples, commonly in short (2–3 vessels) radial rows. Average tangential vessel diameter 160–370 µm. Average number of vessels/mm² 3–6(–9). Perforation plates simple. Intervessel pits alternate, average diameter (vertical) 8–13 µm. Vessel-ray pits with reduced borders or apparently simple, rounded or angular or horizontal to vertical. Helical thickenings absent. Tyloses present, thinwalled or sclerotic (occasionally). Other deposits present (nearly white or yellowish).
Tracheids and fibres. Fibres of medium wall thickness. Average fibre length 1200–1600 µm. Fibre pits mainly restricted to radial walls, simple to minutely bordered.
Axial parenchyma. Axial parenchyma not banded. Apotracheal axial parenchyma diffuse-in-aggregates. Paratracheal axial parenchyma vasicentric, or aliform, or confluent. Aliform parenchyma of the lozenge type. Axial parenchyma as strands. Average number of cells per strand: 3–4.
Rays. Rays 3–7 per tangential mm, multiseriate, 3–6(–10) cells wide. Height of large rays commonly over 1000 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. Sheath cells occasionally present.
Secretory structures. Oil and mucilage cells absent. Intercellular canals absent. Laticifers or tanniniferous tubes present (latex tubes in rays).
Mineral inclusions. Crystals not observed. Silica present or not observed, as vitreous silica; in axial parenchyma, in fibres, in vessels. Vitrious silica observed in A. lanceifolius (axial parenchyma, fibres).
Illustrations. • Transverse section. Artocarpus lanceifolius. fibres with small lumina and thicker walls. • Tangential section. Artocarpus lanceifolius. small latex tubes in rays (Lt). Lt »». • Radial section. Artocarpus lanceifolius. latex tube in ray (Lt). Lt »».
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’.
