Mesquite  (Prosopis ), is a genus of trees containing about sixteen species, natives of America, Asia, and Africa, three of which grow in the United States. It varies from a straggling shrub to a widely-branched tree fifty feet high and occurs from central Texas to eastern California, and southward to Chile and Argentina. The very heavy wood is used for fuel and fence posts, while the pods and leaves are much eaten by stock. The Screwpod Mesquite  is twenty-five to thirty feet high and valuable in arid regions.