| Name | Haplopappus watsonii A. Gray | 
| Authorship | A. Gray | 
| Rank | Species | 
| NomenclaturalStatus | NomLeg | 
| Placed in | Haplopappus Cassini | 
| GUID | urn:lsid:ipni.org:names:277944-2 | 
| Citation | 1881 Proc. Amer. Acad. Arts 16: 79 | 
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Haplopappus watsonii A. Gray | 
| Identification made in | [no date] (2) |