Prosopis pubescens, commonly known as screwbean mesquite, is a small deciduous tree or shrub that is native to the southwestern United States and Mexico. This plant belongs to the legume family and is known for its small, twisted pods that resemble a screw or corkscrew. In addition to screwbean mesquite, this plant has several synonyms, including Algarrobo pubescens, Algarrobo de del Monte, and Tornillo. The plant is often used for livestock feed due to its high protein and carbohydrate content. It is also used for firewood and as a source of shade in arid regions due to its drought-resistant properties.