| Name | Delphinium oreganum Howell |
| Authorship | Howell |
| Rank | Species |
| Placed in | Delphinium Linnaeus |
| Citation | 1897 Fl. N.W. Amer. 1: 22 |
| Holdings | 9 Specimens held in the Harvard University Herbaria identified as Delphinium oreganum Howell |
| Identification made in | [no date] (9) |
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