Equisetum alaskanum (A.A. Eaton) J.P. Anderson
Equisetum alaskanum (A.A. Eaton) J.P. Anderson is a synonym sensu Christenhusz et al., 2019 of:
Equisetum variegatum Schleicher ex F. Weber & D. Mohr, an accepted species name sensu FNA Ed. Comm., 1993.