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CCDB → Angiosperms → Compositae → Arnica → Arnica rydbergii Greene
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Arnica rydbergii Greene | Arnica rydbergii Greene | 19(1) | 38(1) | Asteracea | Wolf 1980 Amer. J. Bot. | ||
| Arnica rydbergii Greene | Arnica rydbergii Greene | 76 | IPCN online | Wolf, S. J. 1987. Cytotaxonomic studies in the genus Arnica (Compositae: Senecioneae). Rhodora 89: 391–400. | |||
| Arnica rydbergii Greene | Arnica rydbergii Greene | 19 | 38 | IPCN online | Wolf, S. J. 1980. Cytogeographical studies in the genus Arnica (Compositae : Senecioneae). I. Amer. J. Bot. 67: 300–308. | ||
| Arnica rydbergii Greene | Arnica rydbergii Greene | 76 | IPCN online | Straley, G. B. 1979. In IOPB chromosome number reports LXIII. Taxon 28: 278. |