Hypericum mutilum subsp. boreale (Britton) J.M. Gillett
Hypericum mutilum subsp. boreale (Britton) J.M. Gillett is a synonym sensu FNA Ed. Comm., 2015 of:
Hypericum boreale (Britton) E.P. Bicknell, an accepted species name sensu FNA Ed. Comm., 2015.