Texas Vascular Plant Checklist:  Equisetaceae
The Horsetail Family
(Equisetophyta, Equisetopsida, Equisetidae)

 Equisetum
   arvense L. (common horsetail, bottlebrush, field horsetail)
   × ferrissii Clute (pro sp.) [hyemale × laevigatum]
   hyemale var. affine (Engelm.) A.A. Eat. (scouringrush)
   laevigatum A. Braun (smooth horsetail, smooth scouringrush, braun's scouringrush, kansas horsetail, kansas scouringrush, summer scouringrush)