In Anacardiaceae The reddish brown wood of quebracho trees (genus Schinopsis, especially S. lorentzii) yields commercial tannin. The pepper tree (Schinus molle), Cotinus species, and several species of sumac (Rhus) are cultivated as ornamentals. Poison ivy, poison oak, and poison sumac (all Toxicodendron Read More
Argentina
In Argentina: The Gran Chaco …east, where tannin from the quebracho tree met the demand of the Argentine leather industry. At the start of the 20th century, European settlers in the eastern Chaco began raising cotton, a crop that could withstand the long drought period. Small cotton-growing areas spread westward nearly to San Miguel de… Read More
Chaco Boreal
In Chaco Boreal …Paraguay River that include the quebracho, a tree valuable as a source of tannin. Farther west are forests of spiny, thorny deciduous trees and brush, interrupted by patches of tall, coarse savanna grass. Paraguay acquired most of the region from Bolivia after the Chaco War (1932–35), though the southwestern and… Read More
Gran Chaco
In Gran Chaco: Plant life …forests where various species of quebracho tree are dominant and economically important as sources of tannin and lumber. These forests cover extensive areas away from the rivers; nearer the rivers they occupy the higher, better-drained sites, giving rise to a landscape in which the forests appear to be islands amid… Read More
Santiago del Estero
In Santiago del Estero …scrubs and clusters of low quebracho trees typify the Gran Chaco area, whereas saline marshes and lakes dominate the south and southwest. The (perennial) Dulce and (seasonal) Salado rivers discharge from outliers of the Andes onto the plains of Santiago del Estero, diagonally draining the province from the northwest to… Read More
sources of tannin
In tannin …the wood or bark of quebracho (Schinopsis), mangrove (various genera and species), and wattle (Acacia). Read More
Uruguay
In Uruguay: Plant and animal life The algaroba (carob tree) and quebracho (whose wood and bark are utilized in tanning and dyeing) are prevalent, and indigenous palms grow in the valleys and along the southeastern coast. Common smaller plants include mimosa, myrtle, rosemary, and scarlet-flowered ceibo. Read More
