| Name | Senecio stygius Greene |
| Authorship | Greene |
| Rank | Species |
| Placed in | Senecio Linnaeus |
| Citation | 1909 Leafl. Bot. Observ. Crit. 2(1): 21 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Senecio stygius Greene |
| Identification made in | [no date] (2) |