Argentina, The Gran Chaco

The western Gran Chaco has growths of thorn forest dominated by algaroba (carob trees) in the drier and often saline zones. Quebracho trees (a source of tannin) are present, but not to the extent that they are farther east. No plants survive in areas with finer salt at the surface. Coarse bunchgrasses are common in the dry steppe, which also supports dense scrub forests