| | Commercial timbers |
Nomenclature etc. FABACEAE-CAESALPINIOIDEAE. Syn. Peltophorum vogelianum Benth. Trade and local names: yvyrapyta (PY); canafístula (AR); angico amarelo, farinha seca, faveira, sobrasil, tamboril bravo, guarucaia, ibirá-puitá (BR). Not protected under CITES regulations.
Description based on 3 specimens. Tree. Geographic distribution: tropical South America, southern Brazil, temperate South America.
General. Growth ring boundaries distinct. Demarcated by marginal parenchyma bands (1–2 seriate, sometimes discontinuous), few rows of radially flattened fibres, and slightly thickened (noded) rays. Heartwood basically brown and red; without streaks. Sapwood colour distinct from heartwood colour. Density 0.8–0.9 g/cm³.
Vessels. Vessels present. Wood diffuse porous. Vessels in multiples, commonly in short (2–3 vessels) radial rows. Average tangential vessel diameter 80–240 µm. Average number of vessels/mm² 1–7. Perforation plates simple. Intervessel pits alternate, average diameter (vertical) 6–8 µm, pits vestured. Vessel-ray pits with distinct borders, similar to intervessel pits. Other deposits present, brown to nearly black organic contents.
Tracheids and fibres. Fibres of medium wall thickness. Fibre pits mainly restricted to radial walls, simple to minutely bordered. Helical thickenings absent. Fibres exclusively septate; evenly distributed.
Axial parenchyma. Axial parenchyma banded. Bands marginal (or seemingly marginal). Bands fine. Axial parenchyma apotracheal, or paratracheal. Apotracheal axial parenchyma diffuse and diffuse-in-aggregates. Paratracheal axial parenchyma vasicentric and confluent. Axial parenchyma as strands. Average number of cells per strand: 2–4. Apotracheal parenchyma scarce, generally crystalliferous.
Rays. Rays 5–11 per tangential mm, multiseriate, (1–)2–3 cells wide. Height of large rays up to 500 µm. Rays composed of a single cell type (homocellular); 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.
Physical and chemical tests. Heartwood not fluorescent. Water extract not fluorescent; colour of water extract red. Heartwood extractives leachable when in contact with water. Ethanol extract fluorescent. Colour of ethanol extract red. Water extract with yellow fluorescence, ethanol extract with pinkish fluorescence. Froth test slightly positive. Splinter burns to partial ash. Ash white to grey.
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’.
