. Trees of Texas; an illustrated manual of the native and introduced trees of the state . bs with alternate unequally pinnate leaves,prickly spines, flowers in drooping axillary racemes, and pods, winged on one edge. Flowers white 1. R. Pseudacacia, Flowers rose colored 2. R. Xeo Mexicana. 1. Robinia pseudceacia L. Locust. A rather large, slen-der tree 70^-80^ high with ascending branches, and deeplyfurrowed, reddish brown bark. Leaves unequally pinnate,leaflets 7-19. Flowers in loose racemes, white with a yellowspot on the standard, fragrant. Fruit a dehiscent, slightlycurved,
. Trees of Texas; an illustrated manual of the native and introduced trees of the state . bs with alternate unequally pinnate leaves,prickly spines, flowers in drooping axillary racemes, and pods, winged on one edge. Flowers white 1. R. Pseudacacia, Flowers rose colored 2. R. Xeo Mexicana. 1. Robinia pseudceacia L. Locust. A rather large, slen-der tree 70^-80^ high with ascending branches, and deeplyfurrowed, reddish brown bark. Leaves unequally pinnate,leaflets 7-19. Flowers in loose racemes, white with a yellowspot on the standard, fragrant. Fruit a dehiscent, slightlycurved, reddish brown, flat pod. An eastern tree introduced into our area. 2. Robinia Neo Mexicana Gray. New Mexico Locust. Asmall tree or shrub 20-25^ high with ascending branches, thin,scaly bark and almost straight spines. Leaves unequally pin-nate, leaflets 10 to 15. Flowers in rather dense axillary ra-cemes, rose colored. Fruit a dehiscent flat, leathery, lightbrown pod. New ^Mexico, Arizona. Colorado and extending in Texas tathe Pecos River Yallev. 24 Bulletin of the University of Texas. Fig. 3S. Robinis pseudocacia, COURSETIA De Condolle. 1. Coursetia axillaris. Coulter and Rose. A small tree orshrub with unarmed zigzag twigs and smooth bark. Leavesunequally pinnate, leaflets 7 to 11. Flowers white, in few The Trees of Texas 125 flowered racemes, or solitary. Fruit a narrow linear, smootiipod constricted between the 8an Diego, Texas. ZYGOPHYLLACEAE Lindley. The Caltrop Family. Porleira Kuiz and Favon. 1. Porleira augustifolia (Engelmanj A. Gray. A smallstraggling tree or shrub with smooth branches, leaves oppo-site, evenly pinnate, leaflets -1 to 6 pairs, tlowers purple,borne on short branches. Fruit a 2-lobed or 4-lobed capsule. On plains and prairies of western Texas and Mexico. KOEBERLINIACEAE Engier. The Junco Family. Koeberlinia Zuccarini. 1. Koeberlinia spinosa Zuccarini. A small, low, roundtopped, thorny tree with reddish brown bark and light greentwigs. Leaves
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