| | Commercial timbers |
Nomenclature etc. ANACARDIACEAE. Trade and local names: jobo, jobo macho, hobo colorado (CO); ubos, cedrillo, itahuba (BO); ajuelo (EC); shungu, ushun (PE); jobo corronchoso, ciruelo de hueso, coropa (VE); taperiba (BR); jobito (CO); jocote (CR); pok (BZ); monbín (HO). Not protected under CITES regulations.
Tree. Geographic distribution: tropical Africa, Mexico and Central America, Caribbean, tropical South America.
General. Heartwood basically white or grey (to light brown). Sapwood colour similar to heartwood colour. Density 0.3–0.55 g/cm³.
Vessels. Wood diffuse porous. Vessels in multiples, commonly in short (2–3 vessels) radial rows. Average tangential vessel diameter 80–260 µm. Average number of vessels/mm² 3–6(–15). Average vessel element length 300–880 µm. Perforation plates simple. Intervessel pits alternate, average diameter (vertical) 10–15 µm. Vessel-ray pits with reduced borders or apparently simple, rounded or angular or horizontal to vertical. Tyloses absent.
Tracheids and fibres. Fibres very thin-walled, or of medium wall thickness. Average fibre length 850–1430 µm. Fibre pits mainly restricted to radial walls, simple to minutely bordered. Fibres exclusively septate; evenly distributed.
Axial parenchyma. Axial parenchyma present. Apotracheal axial parenchyma diffuse-in-aggregates. Paratracheal axial parenchyma scanty, or vasicentric. Axial parenchyma as strands. Average number of cells per strand: 4.
Rays. Rays 2–4 per tangential mm, multiseriate, 3–5(–7) cells wide. 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.
Secretory structures. Intercellular canals present, oriented radially.
Mineral inclusions. Crystals present, prismatic, located in ray cells and axial parenchyma cells. Crystal-containing ray cells upright and/or square and procumbent. Crystal-containing axial parenchyma cells not chambered. Number of crystals per cell or chamber one. Silica not observed.
Physical and chemical tests. Froth test negative.
Illustrations. • Transverse section. • Tangential section. • Radial section. • Intercellular canal; crystals. radial intercellular canal (IC) and prismatic crystals in marginal ray cells (CR). CR. IC.
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’.
