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CCDB → Angiosperms → Compositae → Packera → Senecio harfordii Greenm.
| Name | Accepted Name | Gametophytic(n) | Sporophytic(2n) | Data Source | reference | ||
| Senecio harfordii Greenm. | Packera bolanderi var. harfordii (Greenm.) Trock & T. M. Barkley | 23 | IPCN65 | Palmblad 1965 | |||
| Senecio harfordii Greenm. | Packera bolanderi var. harfordii (Greenm.) Trock & T. M. Barkley | 23 | Cave1963 | Ornduff et al. 1963 |