| Name | Havardia mexicana (Rose) Britton & Rose |
| Authorship | (Rose) Britton & Rose |
| Rank | Species |
| NomenclaturalStatus | Unknown |
| Placed in | Havardia Small |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Havardia mexicana (Rose) Britton & Rose |
| Identification made in | [no date] (2) |