Achillea atrata subsp. halleri (Crantz) P. Fourn., Quatre Fl. France: 969. 1939
Achillea atrata subsp. halleri, Quatre Fl. France: 969. 1939
is new combination for Achillea halleri, Inst. Rei Herb. 1: 303. 1766
Achillea atrata subsp. halleri, Quatre Fl. France: 969. 1939