| Name | Delphinium simplex Douglas ex Hooker |
| Authorship | Douglas ex Hooker |
| Rank | Species |
| Placed in | Delphinium Linnaeus |
| Citation | 1840 Fl. Bor.-Amer. [Hooker] 1: 25 |
| Holdings | 7 Specimens held in the Harvard University Herbaria identified as Delphinium simplex Douglas ex Hooker |
| Identification made in | [no date] (6), 2019 (1) |