| Ranunculaceae | |
Delphinium hansenii subsp. arcuatum
| Ewan | | |
| Ranunculaceae | |
Delphinium hansenii subsp. arcuatum
| Greene | Pittonia 3: 94 | 1896 |
| Ranunculaceae | |
Delphinium hansenii var. arcuatum
| Greene | Pittonia 3: 94 | 1896 |
| Ranunculaceae | |
Delphinium hansenii subsp. ewanianum
| M.J. Warnock | Phytologia 68(1): 3–4 | 1990 |
| Ranunculaceae | |
Delphinium hansenii subsp. hansenii
| | | |
| Ranunculaceae | |
Delphinium hansenii subsp. kernense
| (Davidson) Ewan | Univ. Colorado Stud., Ser. D, Phys. Sci. 2(2): 193 | 1945 |
| Ranunculaceae | |
Delphinium hansenii var. kernense
| Davidson | Muhlenbergia 4(3): 37 | 1908 |