| Name | Willardia mexicana (S. Watson) Rose |
| Authorship | (S. Watson) Rose |
| Rank | Species |
| Placed in | Willardia |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Willardia mexicana (S. Watson) Rose |
| Identification made in | [no date] (2), 1972 (1) |