| Name | Haplopappus phyllocephalus subsp. primitivus H. M. Hall |
| Authorship | H. M. Hall |
| Rank | Subspecies |
| NomenclaturalStatus | NomLeg |
| Placed in | Haplopappus phyllocephalus de Candolle |
| GUID | urn:lsid:ipni.org:names:329856-2 |
| Citation | 1928 Publ. Carnegie Inst. Wash. 389: 56 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Haplopappus phyllocephalus subsp. primitivus H. M. Hall |
| Identification made in | 1975 (1), 1983 (1) |