Achillea occidentalis (de Candolle) Rafinesque ex Rydberg
Achillea occidentalis (de Candolle) Rafinesque ex Rydberg is a synonym sensu FNA Ed. Comm., 2006a of:
Achillea borealis Bongard var. borealis, an accepted variety name sensu TROPICOS.
Achillea occidentalis (de Candolle) Rafinesque ex Rydberg is a synonym sensu FNA Ed. Comm., 2006a of:
Achillea borealis Bongard var. borealis, an accepted variety name sensu TROPICOS.