Aspidosperma quebracho-blanco

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Quebracho blanco
Aspidosperma quebracho-blanco.jpg
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Gentianales
Family: Apocynaceae
Genus: Aspidosperma
Species: A. quebracho-blanco
Binomial name
Aspidosperma quebracho-blanco
Schltr.
Synonyms[1]
  • Macaglia quebracho-blanco (Schltdl.) A.Lyons
  • Aspidosperma quebracho Griseb
  • Macaglia quebracho (Griseb.) Kuntze
  • Aspidosperma crotalorum Speg.

Quebracho blanco, called kebrako or white quebracho,[2] is a South American tree species, native to Brazil, N Argentina, Bolivia, Paraguay, and Uruguay.[1] It must not be confused with other species also known as quebracho, but belonging to the genus Schinopsis.[3]

Growth[edit]

Aspidosperma quebracho-blanco

Quebracho blanco wood is uniformly yellow-ochre, without differences between hardwood and sapwood. It is quite heavy (relative density = 0.885 g/cm³) and hard, and responds well to bending and shock. Upon drying it tends to collapse, producing deformations and cracks, so the drying process is slow; the wood must be treated with fungicides. It is easy to work and has many uses in carpentry (carts, wheels, floors, shoes, tool handles, furniture); it is also good for chess pieces, skis, etc. Preserved with creosote it can be used outdoors. In some places it is widely used as coal, since it does not produce sparks or large amounts of ash, and it burns strong and slowly.[4]

Other chemicals[edit]

Quebrachitol is a cyclitol, a cyclic polyol found in the bark of A. quebracho.[5]

Cultivars[edit]

References[edit]

  1. ^ a b Kew World Checklist of Selected Plant Families
  2. ^ "USDA GRIN Taxonomy". 
  3. ^ Morales, J.F. (2010). La familia Apocynaceae s. str. (Apocynoideae, Rauvofioideae) en Uruguay. Darwiniana 48: 68-86.
  4. ^ Libro del Árbol, Tome II, edited by Celulosa Argentina S. A., Buenos Aires, Argentina, October 1975.
  5. ^ Quebrachitol. Jan van Alphen, Ind. Eng. Chem., 1951, 43 (1), pp 141–145, doi:10.1021/ie50493a041
  6. ^ Govaerts, R., Michielsen, K. & Jablonski, E. (2011). Untraced Weeping Broadleaf cultivars: an overview. Belgische Dendrologie Belge 2009: 19-30.