|
Search over 100 encyclopedias and dictionaries: |
Research categories | Follow us on Twitter |
Research categories
View all topics in the newsView all reference sources at Encyclopedia.com |
|||
quebracho , name for a tanning substance and for the trees from which it comes, chiefly the red quebracho, or quebracho colorado ( Schinopsis lorentzii ), of the family Anacardiaceae ( sumac family). This hardwood tree, native to the Paraguayan subtropics, supplies one of the most durable and heavy of timbers. It also provides much of the vegetable tannin for the leather industry although the populations are being depleted. The heartwood, stripped of its bark and subjected to extraction processes, is about 30% tannin. Quebracho is obtained chiefly from wild trees of the forests of the Gran Chaco of Argentina, Paraguay, and Bolivia. White quebracho ( Aspidosperma quebracho-blanco ) of the dogbane family is one of the other hardwoods similarly used and is native to the same region. Red quebracho is classified in the division Magnoliophyta , class Magnoliopsida, order Sapindales, family Anacardiaceae.
Cite this article
Pick a style below, and copy the text for your bibliography.
"quebracho." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 27 May. 2012 <http://www.encyclopedia.com>.
"quebracho." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 27, 2012). http://www.encyclopedia.com/doc/1E1-quebrach.html
"quebracho." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 27, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-quebrach.html
Encyclopedia.com provides students and teachers facts, information, and biographies from verified, citable sources, including: