| Arnica acaulis (Walter) Britton & Sterns & Poggenb. |
Accepted |
19 |
| Arnica angustifolia Vahl |
Accepted |
30 |
| Arnica angustifolia subsp. alpina (L.) I. K. Ferguson |
Accepted |
28 |
| Arnica angustifolia subsp. iljinii (Maguire) I. K. Ferguson |
Accepted |
28 |
| Arnica attenuata (Greene) Maguire |
Accepted |
None |
| Arnica cernua Howell |
Accepted |
19 |
| Arnica chamissonis Less. |
Accepted |
27 |
| Arnica cordifolia Hook. |
Accepted |
38 |
| Arnica dealbata (A. Gray) B. G. Baldwin |
Accepted |
19 |
| Arnica discoidea Benth. |
Accepted |
38 |
| Arnica fulgens Pursh |
Accepted |
19 |
| Arnica gracilis Rydb. |
Accepted |
38 |
| Arnica griscomii Fernald |
Accepted |
38 |
| Arnica griscomii subsp. frigida (C. A. Mey.) S. J. Wolf |
Accepted |
29 |
| Arnica lanceolata Nutt. |
Accepted |
38 |
| Arnica lanceolata subsp. prima (Maguire) Strother & S. J. Wolf |
Accepted |
33 |
| Arnica latifolia Bong. |
Accepted |
19 |
| Arnica lessingii (Torr. & A. Gray) Greene |
Accepted |
38 |
| Arnica lonchophylla Greene |
Accepted |
38 |
| Arnica longifolia D. C. Eaton |
Accepted |
28 |
| Arnica louiseana Farr |
Accepted |
38 |
| Arnica mallotopus (Franch. & Sav.) Makino |
Accepted |
9 |
| Arnica mollis Hook. |
Accepted |
38 |
| Arnica montana L. |
Accepted |
19 |
| Arnica nevadensis A. Gray |
Accepted |
38 |
| Arnica ovata Greene |
Accepted |
38 |
| Arnica parryi A. Gray |
Accepted |
38 |
| Arnica rydbergii Greene |
Accepted |
19 |
| Arnica sachalinensis (Regel) A. Gray |
Accepted |
19 |
| Arnica sororia Greene |
Accepted |
19 |
| Arnica spathulata Greene |
Accepted |
19 |
| Arnica unalaschcensis Less. |
Accepted |
19 |
| Arnica venosa H. M. Hall |
Accepted |
19 |
| Arnica viscosa A. Gray |
Accepted |
19 |
| Arnica angustifolia subsp. tomentosa (J. M. Macoun) G. W. Douglas & Ruyle-Dougl. |
Unresolved |
38 |
| Arnica montana Hook. |
Unresolved |
19 |
| Arnica tomentosa J. M. Macoun ex Greene |
Unresolved |
None |
| Arnica alpina (L.) Olin & Ladau |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica alpina subsp. angustifolia (Vahl) Maguire |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica alpina subsp. attenuata (Greene) Maguire |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica alpina subsp. sornborgeri (Fernald) Maguire |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica angustifolia subsp. angustifolia |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica angustifolia subsp. attenuata (Greene) G. W. Douglas & Ruyle-Dougl. |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica attenuata Greene |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica plantaginea Pursh |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica sornborgeri Fernald |
Synonym of Arnica angustifolia Vahl |
30 |
| Doronicum plantagineum Poir. |
Synonym of Arnica angustifolia Vahl |
30 |
| Arnica angustifolia subsp. alpina |
Synonym of Arnica angustifolia subsp. alpina (L.) I. K. Ferguson |
28 |
| Arnica alpina subsp. iljinii Maguire |
Synonym of Arnica angustifolia subsp. iljinii (Maguire) I. K. Ferguson |
28 |
| Arnica angustifolia subsp. iljinii |
Synonym of Arnica angustifolia subsp. iljinii (Maguire) I. K. Ferguson |
28 |
| Arnica angustifolia subsp. iljinii (Mag.) I. K. Ferguson |
Synonym of Arnica angustifolia subsp. iljinii (Maguire) I. K. Ferguson |
28 |
| Arnica iljinii (Maguire) Iljin |
Synonym of Arnica angustifolia subsp. iljinii (Maguire) I. K. Ferguson |
28 |
| Arnica chamissonis subsp. chamissonis |
Synonym of Arnica chamissonis Less. |
27 |
| Arnica chamissonis subsp. foliosa (Nutt.) Maguire |
Synonym of Arnica chamissonis Less. |
27 |
| Arnica chamissonis subsp. incana (A. Gray) Maguire |
Synonym of Arnica chamissonis Less. |
27 |
| Arnica foliosa Nutt. |
Synonym of Arnica chamissonis Less. |
27 |
| Arnica cordifolia subsp. cordifolia |
Synonym of Arnica cordifolia Hook. |
38 |
| Arnica cordifolia subsp. whitneyi (Fernald) Maguire |
Synonym of Arnica cordifolia Hook. |
38 |
| Arnica parviflora Greene |
Synonym of Arnica cordifolia Hook. |
38 |
| Arnica whitneyi Fernald |
Synonym of Arnica cordifolia Hook. |
38 |
| Whitneya dealbata A. Gray |
Synonym of Arnica dealbata (A. Gray) B. G. Baldwin |
19 |
| Arnica discoidea var. eradiata (A. Gray) Cronquist |
Synonym of Arnica discoidea Benth. |
38 |
| Arnica parviflora A. Gray |
Synonym of Arnica discoidea Benth. |
38 |
| Arnica latifolia var. gracilis (Rydb.) Cronquist |
Synonym of Arnica gracilis Rydb. |
38 |
| Arnica frigida subsp. griscomii (Fernald) S. R. Downie |
Synonym of Arnica griscomii Fernald |
38 |
| Arnica griscomii subsp. griscomii |
Synonym of Arnica griscomii Fernald |
38 |
| Arnica louiseana subsp. griscomii (Fernald) Maguire |
Synonym of Arnica griscomii Fernald |
38 |
| Arnica frigida C. A. Mey. ex Iljin |
Synonym of Arnica griscomii subsp. frigida (C. A. Mey.) S. J. Wolf |
29 |
| Arnica frigida subsp. frigida |
Synonym of Arnica griscomii subsp. frigida (C. A. Mey.) S. J. Wolf |
29 |
| Arnica louiseana subsp. frigida (C. A. Mey.) Maguire |
Synonym of Arnica griscomii subsp. frigida (C. A. Mey.) S. J. Wolf |
29 |
| Arnica lanceolata subsp. lanceolata |
Synonym of Arnica lanceolata Nutt. |
38 |
| Arnica amplexicaulis Nutt. |
Synonym of Arnica lanceolata subsp. prima (Maguire) Strother & S. J. Wolf |
33 |
| Arnica amplexicaulis subsp. amplexicaulis |
Synonym of Arnica lanceolata subsp. prima (Maguire) Strother & S. J. Wolf |
33 |
| Arnica alpina subsp. lonchophylla (Greene) G. W. Douglas & Ruyle-Dougl. |
Synonym of Arnica lonchophylla Greene |
38 |
| Arnica alpina subsp. lonchophylla (Greene) R. L. Taylor & MacBryde |
Synonym of Arnica lonchophylla Greene |
38 |
| Arnica lonchophylla subsp. chionopappa (Fernald) Maguire |
Synonym of Arnica lonchophylla Greene |
38 |
| Arnica lonchophylla subsp. lonchophylla |
Synonym of Arnica lonchophylla Greene |
38 |
| Arnica longifolia subsp. longifolia |
Synonym of Arnica longifolia D. C. Eaton |
28 |
| Arnica longifolia subsp. myriadenia (Piper) Maguire |
Synonym of Arnica longifolia D. C. Eaton |
28 |
| Arnica louiseana subsp. louiseana |
Synonym of Arnica louiseana Farr |
38 |
| Mallotopus japonicus Franch. & Sav. |
Synonym of Arnica mallotopus (Franch. & Sav.) Makino |
9 |
| Arnica alpina Willd. ex Steud. |
Synonym of Arnica montana L. |
19 |
| Arnica montana subsp. montana |
Synonym of Arnica montana L. |
19 |
| Arnica diversifolia Greene |
Synonym of Arnica ovata Greene |
38 |
| Arnica parryi subsp. parryi |
Synonym of Arnica parryi A. Gray |
38 |
| Arnica parryi subsp. sonnei (Greene) Maguire |
Synonym of Arnica parryi A. Gray |
38 |
| Arnica parryi var. sonnei (Greene) Cronquist |
Synonym of Arnica parryi A. Gray |
38 |
| Arnica spathulata subsp. eastwoodiae (Rydb.) Maguire |
Synonym of Arnica spathulata Greene |
19 |
| Arnica spathulata subsp. spathulata |
Synonym of Arnica spathulata Greene |
19 |
| Arnica alpina Salisb. |
Synonym of Arnica stricta subsp. alpina (L.) I. K. Ferguson |
30 |
| Arnica unalaschcensis |
Synonym of Arnica unalaschcensis Less. |
19 |
| Arnica unalaschcensis None |
Synonym of Arnica unalaschcensis Less. |
19 |
| Arnica unalaschcensis var. tschonoskyi K. ＆. H. Hara |
Synonym of Arnica unalaschcensis var. tschonoskyi (Iljin) Kitam. & H. Hara |
19 |
