| Asteraceae | |
Senecio obovatus var. divisifolius
| Greenm. | Ann. Missouri Bot. Gard. 3(1): 112–113 | 1916 |
| Asteraceae | |
Senecio obovatus var. elliottii
| (Torr. & A. Gray) Fernald | Rhodora 45(540): 507 | 1943 |
| Asteraceae | |
Senecio obovatus fo. elongatus
| (Pursh) Fernald | Rhodora 30(359): 225 | 1928 |
| Asteraceae | |
Senecio obovatus var. elongatus
| (Pursh) Britton | Ill. Fl. N. U.S. 3: 478 | 1898 |
| Asteraceae | |
Senecio obovatus fo. obovatus
| | | |
| Asteraceae | |
Senecio obovatus var. obovatus
| | | |
| Asteraceae | |
Senecio obovatus var. rotundus
| Britton | Ill. Fl. N. U.S. 3: 479 | 1898 |
| Asteraceae | |
Senecio obovatus var. umbratilis
| Greenm. | Monogr. Senecio 1: 24 | 1901 |