PlantsFlowering PlantsCaltrop Family — Family Zygophyllaceae
Leaves opposite, even pinnately compound.
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Texas Lignum-vitae —  Guaiacum angustifolium [1]
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Caltrop — Genus Kallstroemia
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Creosote Bush —  Larrea tridentata [1]
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Peganum — Genus Peganum
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Puncturevine — Genus Tribulus
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Syrian Beancaper —  Zygophyllum fabago [1]
Evidence that species is found in Texas:
  1. USDA Plants Database, advanced search for Texas plants from the United States Department of Agriculture.