PlantsJointfir — Genus Ephedra
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Clapweed —  Ephedra antisyphilitica [1]
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Rough Jointfir —  Ephedra aspera [1]
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Cory's Jointfir —  Ephedra coryi [1]
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Vine Jointfir —  Ephedra pedunculata [1]
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Torrey's Jointfir —  Ephedra torreyana [1]
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Longleaf Jointfir —  Ephedra trifurca [1]
Evidence that species is found in Texas:
  1. USDA Plants Database, advanced search for Texas plants from the United States Department of Agriculture.