| Name | Haplopappus johnstonii S. F. Blake |
| Authorship | S. F. Blake |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Haplopappus Cassini |
| GUID | urn:lsid:ipni.org:names:117593-2 |
| Citation | 1941 Proc. Biol. Soc. Washington 54: 18 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Haplopappus johnstonii S. F. Blake |
| Identification made in | [no date] (1), 1983 (1) |