| Name | Eulychnia iquiquensis (K. Schumann) Britton & Rose |
| Authorship | (K. Schumann) Britton & Rose |
| Rank | Species |
| Placed in | Eulychnia |
| Citation | 1920. (9 Sep 1920) Cactaceae (Britton & Rose) 2: 83–84, t. 15, f. 1 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Eulychnia iquiquensis (K. Schumann) Britton & Rose |
| Identification made in | [no date] (4) |