Sometimes taxonomists create new names for groups that already have a name. They may do this because they are unaware of the original name, or they may think the organism before them belongs to a different group when in fact it does not. If two or more names are found to apply to the same group, they are considered synonyms. In most cases, the first name takes priority and is considered to be the valid or accepted name. However, there can be exceptions, and it's not always easy to determine which of a series of synonyms should be considered valid or accepted. Here we list the synonyms provided to EOL by our classification partners. We also include other versions of the name that most likely refer to the same group, for example, misspellings in the literature or different variations of the authorship associated with the name.

Preferred marks the preferred name from each source.

Integrated Taxonomic Information System (ITIS)

Name Relationship
Achillea millefolium L. Preferred
Achillea borealis Bong. Synonym
Achillea millefolium ssp. borealis (Bong.) Breitung
Achillea laxiflora Pollard & Cockerell
Achillea millefolium var. millefolium L.
Achillea millefolium var. alpicola (Rydb.) Garrett
Achillea millefolium var. arenicola (A.Heller) Nobs
Achillea millefolium var. californica (Pollard) Jeps.
Achillea millefolium var. gigantea (Pollard) Nobs
Achillea millefolium var. litoralis Ehrend. ex Nobs
Achillea millefolium var. megacephala (Raup) B. Boivin
Achillea millefolium var. nigrescens E. Mey.
Achillea millefolium ssp. occidentalis (DC.) Hyl.
Achillea millefolium var. pacifica (Rydb.) G. N. Jones
Achillea millefolium var. puberula (Rydb.) Nobs
Achillea alpicola (Rydb.) Rydb.
Achillea angustissima Rydb.
Achillea arenicola A. Heller
Achillea aspleniifolia auct. non Vent.
Achillea californica Pollard
Achillea eradiata Piper
Achillea fusca Rydb.
Achillea gigantea Pollard
Achillea gracilis Raf.
Achillea lanulosa Nutt.
Achillea megacephala Raup
Achillea nigrescens (E. Mey.) Rydb.
Achillea occidentalis (DC.) Raf. ex Rydb.
Achillea pacifica Rydb.
Achillea puberula Rydb.
Achillea rosea Desf.
Achillea subalpina Greene
Achillea tomentosa Pursh, non L.
Achillea borealis ssp. arenicola (A. Heller) D.D. Keck
Achillea borealis ssp. californica (Pollard) D.D. Keck
Achillea borealis ssp. typica D.D. Keck
Achillea lanulosa ssp. alpicola (Rydb.) D.D. Keck
Achillea lanulosa ssp. megacephala (Raup) Argus
Achillea lanulosa ssp. typica D.D. Keck
Achillea millefolium ssp. atrotegula B. Boivin
Achillea millefolium ssp. lanulosa (Nutt.) Piper
Achillea millefolium ssp. pallidotegula B. Boivin
Achillea millefolium var. borealis (Bong.) Farw.
Achillea millefolium var. occidentalis DC.
Achillea borealis var. arenicola (A. Heller) J.T. Howell
Achillea borealis var. californica (Pollard) J. T. Howell
Achillea lanulosa var. alpicola Rydb.
Achillea lanulosa var. arachnoidea Lunell
Achillea lanulosa var. eradiata (Piper) M. Peck
Achillea millefolium var. aspleniifolia (Vent.) Farw.
Achillea millefolium var. fulva B. Boivin
Achillea millefolium var. fusca (Rydb.) G. N. Jones
Achillea millefolium var. gracilis (Raf.) Raf. ex DC.
Achillea millefolium var. lanulosa (Nutt.) Piper
Achillea millefolium var. maritima Jeps.
Achillea millefolium var. parviligula B. Boivin
Achillea millefolium var. parvula B. Boivin
Achillea millefolium var. rosea (Desf.) Torr. & A. Gray
Achillea millefolium var. russeolata B. Boivin
Achillea magna auct.

Species 2000 & ITIS Catalogue of Life: April 2013

Name Relationship
Achillea millefolium L. Preferred
Achillea tenuifolia var. albicaulis (C.A.Mey.) Trautv.
Achillea rosea Desf.
Achillea gracilis Raf.
Achillea palmeri Rydb.
Achillea borealis Bong.
Achillea magna Haenke
Achillea anethifolia Fisch. ex Herder
Achillea tomentosa Pursh
Achillea tenuis Schur
Achillea millefolium var. borealis (Bong.) Farw.
Achillea millefolium var. millefolium L.
Achillea millefolium f. rhodantha Lepage
Achillea millefolium f. iserana (Podp.) Hayek
Achillea millefolium f. rosea (Desf.) E.L.Rand & Redfield
Achillea millefolium var. nigrescens E. Mey.
Achillea millefolium var. arenicola (A.Heller) Ferris
Achillea millefolium f. millefolium
Achillea millefolium var. fusca (Rydb.) G. N. Jones
Achillea millefolium subsp. compacta (Lam.) Bonnier & Layens
Achillea millefolium var. parviligula
Achillea millefolium var. gigantea (Pollard) Ferris
Achillea millefolium var. puberula (Rydb.) Ferris
Achillea millefolium f. albiflora Dabrowska
Achillea millefolium var. litoralis Ehrenb. ex Nobs
Achillea millefolium var. pacifica (Rydb.) G. N. Jones
Achillea millefolium var. lanulosa (Nutt.) Piper
Achillea millefolium var. asplenifolia (Vent.) Farw.
Achillea millefolium subsp. occidentalis (DC.) Hyl.
Achillea millefolium subsp. borealis (Bong.) Breitung
Achillea millefolium var. gigantea (Pollard) Nobs
Achillea millefolium subsp. atrotegula B. Boivin
Achillea millefolium var. megacephala (Raup) B. Boivin
Achillea millefolium subsp. pallidotegula
Achillea millefolium var. arenicola (A.Heller) Nobs
Achillea millefolium f. discolor B.Boivin
Achillea millefolium var. puberula (Rydb.) Nobs
Achillea millefolium var. sordida W.D.J.Koch
Achillea millefolium var. fulva
Achillea millefolium var. spathulata Dabrowska
Achillea millefolium var. maritima Jeps.
Achillea millefolium var. iserana Podp.
Achillea millefolium var. colliniformis Dabrowska
Achillea millefolium var. californica (Pollard) Jeps.
Achillea millefolium var. dissecta Dabrowska
Achillea millefolium var. rosea (Desf.) Torr. & A. Gray
Achillea millefolium var. lobata Dabrowska
Achillea millefolium var. parvula
Achillea millefolium f. roseiflora B.Boivin
Achillea millefolium f. rubicunda (Farw.) Farw.
Achillea millefolium var. occidentalis DC.
Achillea millefolium var. alpicola (Rydb.) Garrett
Achillea millefolium var. russeolata
Achillea millefolium var. gracilis (Raf.) Raf. ex DC.
Achillea millefolium subsp. lanulosa (Nutt.) Piper
Achillea millefolium f. californica (Pollard) H.M.Hall
Achillea millefolium var. dipetala Dabrowska
Achillea millefolium subsp. balearica Sennen
Achillea millefolium f. roseoides Breitung
Achillea borealis subsp. borealis
Achillea borealis var. borealis
Achillea borealis subsp. typica D.D.Keck
Achillea borealis f. borealis
Achillea borealis var. arenicola J.T.Howell
Achillea borealis subsp. arenicola (A. Heller) D.D. Keck
Achillea borealis f. fusca (Rydb.) Hultén
Achillea borealis var. californica (Pollard) J. T. Howell
Achillea borealis subsp. californica (Pollard) D.D. Keck
Chamaemelum tomentosum (L.) E.H.L.Krause
Chamaemelum millefolium (L.) E.H.L. Krause
Chamaemelum tanacetifolium (All.) E.H.L.Krause
Achillea magna All.
Achillea subhirsuta Gilib.
Achillea pumila Schur
Achillea dentifera Rchb.
Achillea pecten-veneris Pollard
Achillea sylvatica Becker
Achillea ossica K.Koch
Achillea virgata Hort. ex DC.
Achillea puberula Rydb.
Achillea setacea Schwein.
Achillea albida Willd.
Achillea laxiflora A.Nelson
Achillea arenicola A. Heller
Achillios millefoliatus St.-Lag.
Achillea pseudo-tanacetifolia Wierzb. ex Rchb.
Achillea marginata Turcz. ex Ledeb.
Achillea bicolor Wender.
Achillea coronopifolia Willd.
Achillea haenkeana Tausch
Achillea fusca Rydb.
Achillea laxiflora Pollard & Cockerell
Achillea pacifica Rydb.
Achillea pratensis Saukel & R. Länger
Achillea angustissima Rydb.
Achillea magna L.
Achillea alpicola (Rydb.) Rydb.
Achillea compacta Lam.
Achillea eradiata Piper
Achillea megacephala Raup
Achillea californica Pollard
Achillea ceretanica Sennen
Achillea ochroleuca Eichw.
Achillea tenuifolia Salisb.
Achillea occidentalis (DC.) Raf. ex Rydb.
Achillea gigantea Pollard
Achillea cristata Hort. ex DC.
Achillea subalpina Greene
Achillea submillefolium Klokov & Krytzka
Achillea lanata Lam.
Achillea crassifolia Colla
Achillea intermedia Schleich.
Achillea cuspidata Wall.
Achillea nabelekii Heimerl
Achillea lanulosa Nutt.
Achillea ambigua Pollini
Achillea sordida (W.D.J.Koch) Dalla Torre & Sarnth.
Achillea tanacetifolia Mill.
Achillea ambigua Boiss.
Alitubus tomentosus Dulac
Achillea lanulosa f. lanulosa
Achillea lanulosa var. lanulosa
Achillea lanulosa f. rubicunda Farw.
Achillea lanulosa subsp. typica D.D.Keck
Achillea lanulosa subsp. lanulosa
Achillea lanulosa subsp. megacephala (Raup) Argus
Achillea lanulosa f. peroutkyi F.Seym.
Achillea lanulosa subsp. alpicola (Rydb.) D.D. Keck
Achillea lanulosa var. eradiata (Piper) M. Peck
Achillea lanulosa var. arachnoidea Lunell
Achillea lanulosa var. alpicola (Rydb.) Rydb.
Alitubus millefolium (L.) Dulac
Achillea magna var. magna

NCBI Taxonomy

Name Relationship
Achillea millefolium Preferred
Achillea millefolium L. Authority

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