. Trees of Texas; an illustrated manual of the native and introduced trees of the state . Prosopis glandulosa Torrey. Mesquite. A low, roundtopped tree with thick, reddish brown, fissured bark, yellow-ish green twigs and darker branches which ^ire frequentlyarmed with axillary spines. The leaves are bipinnate with 1to 2 pairs of pinnae; leaflets numerous. FloAvers perfect,borne in slender, green or yellowish spikes. Fruit a straightor slightly curved indehiscent pod. Mexico north to Nevada, Kansas, Texas and California. Ithas gradually encroached on the grassy plains and frequentlyforms dense
. Trees of Texas; an illustrated manual of the native and introduced trees of the state . Prosopis glandulosa Torrey. Mesquite. A low, roundtopped tree with thick, reddish brown, fissured bark, yellow-ish green twigs and darker branches which ^ire frequentlyarmed with axillary spines. The leaves are bipinnate with 1to 2 pairs of pinnae; leaflets numerous. FloAvers perfect,borne in slender, green or yellowish spikes. Fruit a straightor slightly curved indehiscent pod. Mexico north to Nevada, Kansas, Texas and California. Ithas gradually encroached on the grassy plains and frequentlyforms dense shrubbery thickets. The wood is heavy, very hard, close grained, dark red incolor, very resistant in contact Avith the soil, takes a beauti-ful finish. It is used for furniture, ornaments, gun stocks, grillwork, posts and fuel. The beans are used for food. The Trees of Texas3. SIDEROCARPAS. Texas Ebonv. iin 1. Siderocarpas flexicaulis (Bentliam) Small. A small ev-ergreen tree or shrub with spreading zigzag branches, armedwith short spines. Leaves bipinnate, pinnae 4-6, leaflets few,. Fig. 35. Prosopis glandulosa. sessil, leathery. Flowers in summer or autumn, in cylindricalshaped spikes. Fruit a flattened, straight, or slightly curvedpod. On blufls of southwest Texas and Mexico. The wood is dark red to ]nirplish brown, hard, used forcabinet work. 116 Bulletin of the University of Texas 4. ACACIA (Tournefort) Adamson. The Acacias. Thorny trees with alternate evenly bipinnate leaves, nu-merous pinnae and numerous leaflets. Flowers in globoseheads, or cylindrical racemes. Fruit an elongated, flat orcylindrical pod. Flowers in elongated spikes or racemes. Pods only slightly curved 1. A. Wrightii. Pods much curled and contorted 2. A. Greggii. Flowers in globular heads 6. A. Subtortuosa. 1. Acacia Wrightii Bentham. Cats Claw. A small widetopped tree, sometimes 25° high, with furrowed bark; striated,angular branchlets, and short curved spines. Leaves evenlybipiniiate with 2-6 pinnae;
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