Isoetes tuckermanii var. borealis A.A. Eaton
Isoetes tuckermanii var. borealis A.A. Eaton is a synonym sensu Hassler & Schmidt, 2014+ of:
Isoetes tuckermanii A. Braun ex Engelmann subsp. tuckermanii, an accepted subspecies name sensu Brunton, 2018a.