| Name | Havardia sonorae (S. Watson) Britton & Rose |
| Authorship | (S. Watson) Britton & Rose |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Havardia Small |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Havardia sonorae (S. Watson) Britton & Rose |
| Identification made in | [no date] (1) |