Braya glabella ssp. glabella Richardson  

Family: Brassicaceae

smooth northern-rockcress

[Braya alpina var. americana (Hook.) S. Watson, moreBraya alpina var. glabella (Richardson) S. Watson, Braya humilis var. americana (Hook.) B. Boivin, Braya humilis var. glabella (Richardson) B. Boivin]