| Name | Eustylis purpurea Engelmann & A. Gray |
| Authorship | Engelmann & A. Gray |
| Rank | Species |
| Placed in | Eustylis |
| Citation | 1847 Boston J. Nat. Hist. 5: 236 |
| Holdings | 1 Specimen held in the Harvard University Herbaria identified as Eustylis purpurea Engelmann & A. Gray |
| Identification made in | [no date] (1) |