Hippochaete hyemalis var. alaskana (A.A. Eaton) Farwell

Hippochaete hyemalis var. alaskana (A.A. Eaton) Farwell 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.