Achillea millefolium Linnaeus [family COMPOSITAE], Sp. Pl., 2: 899. 1753
Achillea alpicola (Rydberg) Rydberg [family COMPOSITAE]
Achillea arenicola A. Heller [family COMPOSITAE]
Achillea borealis Bongard subsp. arenicola (A. Heller) D. D. Keck [family COMPOSITAE]
Achillea borealis subsp. californica (Pollard) D. D. Keck [family COMPOSITAE]
Achillea californica Pollard [family COMPOSITAE]
Achillea gigantea Pollard [family COMPOSITAE]
Achillea lanulosa Nuttall [family COMPOSITAE]
Achillea lanulosa subsp. alpicola (Rydberg) D. D. Keck [family COMPOSITAE]
Achillea laxiflora Pollard & Cockerell [family COMPOSITAE]
Achillea megacephala Raup [family COMPOSITAE]
Achillea millefolium var. alpicola (Rydberg) Garrett [family COMPOSITAE]
Achillea millefolium var. arenicola (A. Heller) Nobs [family COMPOSITAE]
Achillea millefolium var. asplenifolia (Ventenat) Farwell [family COMPOSITAE]
Achillea millefolium subsp. borealis (Bongard) Breitung [family COMPOSITAE]
Achillea millefolium var. borealis (Bongard) Farwell [family COMPOSITAE]
Achillea millefolium var. californica (Pollard) Jepson [family COMPOSITAE]
Achillea millefolium var. gigantea (Pollard) Nobs [family COMPOSITAE]
Achillea millefolium subsp. lanulosa (Nuttall) Piper [family COMPOSITAE]
Achillea millefolium var. lanulosa (Nuttall) Piper [family COMPOSITAE]
Achillea millefolium var. litoralis Ehrendorfer ex Nobs [family COMPOSITAE]
Achillea millefolium var. maritima Jepson [family COMPOSITAE]
Achillea millefolium var. megacephala (Raup) B. Boivin [family COMPOSITAE]
Achillea millefolium var. nigrescens E. Meyer [family COMPOSITAE]
Achillea millefolium var. occidentalis de Candolle [family COMPOSITAE]
Achillea millefolium var. pacifica (Rydberg) G. N. Jones [family COMPOSITAE]
Achillea millefolium var. puberula (Rydberg) Nobs [family COMPOSITAE]
Achillea nigrescens (E. Meyer) Rydberg [family COMPOSITAE]
Achillea occidentalis (de Candolle) Rafinesque ex Rydberg [family COMPOSITAE]
Achillea pacifica Rydberg [family COMPOSITAE]
Achillea puberula Rydberg [family COMPOSITAE]
Achillea rosea Desfontaines [family COMPOSITAE]
Achillea subalpina Greene [family COMPOSITAE]