| Name | Synthyris borealis Pennell |
| Authorship | Pennell |
| Rank | Species |
| Placed in | Synthyris Bentham |
| Citation | 1933 Proc. Acad. Nat. Sci. Philadelphia 85: 88, fig. 1. |
| Holdings | 10 Specimens held in the Harvard University Herbaria identified as Synthyris borealis Pennell |
| Identification made in | [no date] (10) |