| Name | Horsfordia purissimae Brandegee |
| Authorship | Brandegee |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Horsfordia |
| Citation | 1889 Proc. Calif. Acad. Sci. Ser. 2, 2: 135 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Horsfordia purissimae Brandegee |
| Identification made in | [no date] (1) |