Equisetum laevigatum A.Braun, Amer. J. Sci. Arts 46: 87. 1844 sec. Mickel & Smith 2004
Lectotype: United States of America, Bords immediats du Mississippi, St. Louis, Mo., Jun 1840, N. Riehl 279 (NY)
- =Equisetum kansanum J.H.Schaffn., Ohio Naturalist 13: 21. 1912 syn. sec. Mickel & Smith 2004