| Name | Dayia havardii (A. Gray) J. M. Porter |
| Authorship | (A. Gray) J. M. Porter |
| Rank | Species |
| Placed in | Dayia J. M. Porter |
| Holdings | 11 Specimens held in the Harvard University Herbaria identified as Dayia havardii (A. Gray) J. M. Porter |
| Identification made in | [no date] (11) |