| Name | Helianthus alienus E. Watson |
| Authorship | E. Watson |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Helianthus |
| GUID | urn:lsid:ipni.org:names:118993-2 |
| Citation | 1929 Pap. Michigan Acad. Sci. 9: 406 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Helianthus alienus E. Watson |
| Identification made in | 2007 (1) |