| Name | Haplopappus gracilis (Nuttall) A. Gray |
| Authorship | (Nuttall) A. Gray |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Haplopappus Cassini |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Haplopappus gracilis (Nuttall) A. Gray |
| Identification made in | [no date] (4), 1964 (1) |