Arnica terrae-novae Fernald accepted as Arnica angustifolia subsp. angustifolia Vahl (original description)
Bidens eatonii var. interstes (Fassett) Fassett accepted as Bidens eatonii Fernald (original description)
Bidens eatonii var. major Fassett accepted as Bidens eatonii Fernald (original description)
Bidens eatonii var. mutabilis Fassett accepted as Bidens eatonii Fernald (original description)
Bidens eatonii var. simulans Fassett accepted as Bidens eatonii Fernald (original description)
Bidens eatonii var. typica Fassett accepted as Bidens eatonii Fernald (original description)
Bidens hyperborea var. laurentiana Fassett accepted as Bidens hyperborea Greene (original description)
Bidens hyperborea var. svensonii Fassett accepted as Bidens hyperborea Greene (original description)
Bidens hyperborea var. typica Fassett accepted as Bidens hyperborea Greene (original description)
Bidens multiceps Fassett (original description)
Eupatorium perfoliatum f. trifolium Fassett accepted as Eupatorium perfoliatum L. (original description)
Eupatorium perfoliatum f. truncatum (Muhl. ex Willd.) Fassett accepted as Eupatorium perfoliatum L. (original description)