| Arnica cordifolia Hook. | Löve, A. & D. Löve. 1982. In: IOPB chromosome number reports LXXIV. Taxon 31: 120–126. | 82-83 | | 76 |
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| Arnica cordifolia Hook. | Wolf, S. J. & K. E. Denford. 1984. Taxonomy of Arnica (Compositae) subgenus Austromontana. Rhodora 86: 239–309. | 84-85 | | 38, 57, 76 |
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| Arnica cordifolia Hook. | Wolf, S. J. & K. E. Denford. 1984. Taxonomy of Arnica (Compositae) subgenus Austromontana. Rhodora 86: 239–309. | 84-85 | 19 | |
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| Arnica cordifolia Hook. | Wolf, S. J. 1987. Cytotaxonomic studies in the genus Arnica (Compositae: Senecioneae). Rhodora 89: 391–400. | 86-87 | | 57 |
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| Arnica cordifolia Hook. | Straley, G. B. 1982. In IOPB chromosome number reports LXXVI. Taxon 31: 579. | 82-83 | | 57, 76, 114 |
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| Arnica cordifolia Hook. | Taylor, J. A. & R. TANAKA. 1977. Nuclear behavior in the megagametogenesis and embryogenesis of Pogonia japonica. CIS Chromosome Inform. Serv. 23: 11–12. | 75-78 | 38 | 76 |
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