| Share
 

quebracho

quebracho (kābräˈchō) [key], 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.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

More on quebracho from Infoplease:

See more Encyclopedia articles on: Plants


Premium Partner Content
HighBeam Research
Documents Images and Maps Reference
(from Newspapers, Magazines, Journals, Newswires, Transcripts and Books)

Research our extensive archive of more than 80 million articles from 6,500 publications.

Additional search results provided by HighBeam Research, LLC. © Copyright 2005. All rights reserved.

24 X 7

Private Tutor

Click Here for Details
24 x 7 Tutor Availability
Unlimited Online Tutoring
1-on-1 Tutoring