Valerio Pillar

(from early Spanish word for “ax-breaker”), any one of several hardwood trees with hard, dense wood that contains tannin; quebracho blanco, or white quebracho (Aspidosperma quebracho blanco), of dogbane family, is a tall tree with a white wood; quebracho colorado, or red quebracho (Schinopsis lorentzii), is the chief source of the extract ,