| Name | Haplopappus stenophyllus A. Gray |
| Authorship | A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Haplopappus Cassini |
| GUID | urn:lsid:ipni.org:names:117801-2 |
| Citation | 1874 U.S. Expl. Exped., Phan. Pacific N. Amer. 347 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Haplopappus stenophyllus A. Gray |
| Identification made in | [no date] (1) |