Nomenclature etc. MYRTACEAE. Not protected under CITES regulations.
Description based on 7 specimens. Tree. Geographic distribution: Indomalesia.
General. Growth ring boundaries indistinct or absent. Heartwood basically brown and red, without streaks. Sapwood colour distinct from heartwood colour. Odour indistinct or absent.
Vessels. Vessels present. Wood diffuse-porous. Vessels arranged in diagonal and/or radial pattern and no specific pattern, exclusively solitary. Vessel outline rounded. Two distinct vessel diameter classes absent. Average tangential vessel diameter 165–240–320 µm; diameter of vessel lumina: very large. Average number of vessels/mm² 5–9; vessels per square millimetre few. Perforation plates simple. Intervessel pits alternate, average diameter (vertical) 7–10 µm, medium, not vestured. Vessel-ray pits with reduced borders or apparently simple, rounded or angular, of uniform size or type, of the same type in adjacent elements, located throughout the ray. Helical thickenings absent. Tyloses in vessels present, thinwalled. Other deposits in heartwood vessels not observed.
Tracheids and fibres. Vascular or vasicentric tracheids commonly present. Fibres of medium wall thickness. Fibre pits common in both radial and tangential walls, distinctly bordered. Helical thickenings absent. Fibres non-septate. Fibre pits often more frequent in tangential than radial walls.
Axial parenchyma. Axial parenchyma present, not banded. Axial parenchyma apotracheal and paratracheal. Apotracheal axial parenchyma diffuse. Paratracheal axial parenchyma vasicentric. Axial parenchyma as strands. Average number of cells per axial parenchyma strand 4–8. Unlignified parenchyma absent. Apotracheal parenchyma consisting mostly of chambered crystalliferous cells; paratracheal parenchyma mixed with vasicentric tracheids.
Rays. Rays present, 9–14 per tangential mm, multiseriate (also if only few), 1(–2) cells wide, narrow (2–3 seriate). Rays with multiseriate portions as wide as uniseriate portions absent. Aggregate rays absent. Rays of one size. Height of large rays up to 500 µm. Rays composed of a single cell type (homocellular); homocellular ray cells procumbent. Sheath cells absent. Tile cells absent. Perforated ray cells absent. Disjunctive ray parenchyma end walls indistinct or absent. Wood rays predominantly but not exclusively uniseriate.
Storied structures. Storied structure absent.
Secretory structures. Oil and mucilage cells absent. Intercellular canals absent. Laticifers or tanniniferous tubes absent.
Cambial variants. Included phloem absent. Other cambial variants 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. Crystal containing cells of normal size. Cystoliths absent. Silica not observed.
Physical and chemical tests. Heartwood not fluorescent. Water extract not fluorescent; basically red or shade of red. Heartwood extractives leaching out when in contact with water. Ethanol extract fluorescent. Colour of ethanol extract red or shade of red. Chrome azurol-S test negative. Froth test positive. Splinter burns to partial ash. Ash bright white.
Illustrations. • Transverse section. Eucalyptus deglupta. • Tangential section. Eucalyptus deglupta. • Radial section. Eucalyptus deglupta.
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: 25th June 2009. http://delta-intkey.com’.