| Ranunculaceae | |
Delphinium hesperium subsp. cuyamacae
| (Abrams) F.H. Lewis & Epling | Brittonia 8(1): 11 | 1954 |
| Ranunculaceae | |
Delphinium hesperium var. cuyamacae
| (Abrams) Jeps. | Fl. Calif. 1: 524 | 1915 |
| Ranunculaceae | |
Delphinium hesperium var. hansenii
| Greene | Fl. Francisc. 3: 304 | 1892 |
| Ranunculaceae | |
Delphinium hesperium subsp. hesperium
| | | |
| Ranunculaceae | |
Delphinium hesperium var. hesperium
| | | |
| Ranunculaceae | |
Delphinium hesperium fo. hirsutum
| Ewan | Univ. Colorado Stud., Ser. D, Phys. Sci. 2: 179 | 1945 |
| Ranunculaceae | |
Delphinium hesperium fo. pallescens
| Ewan | Univ. Colorado Stud., Ser. D, Phys. Sci. 2(2): 179–180 | 1945 |
| Ranunculaceae | |
Delphinium hesperium subsp. pallescens
| (Ewan) F.H. Lewis & Epling | Brittonia 8(1): 10 | 1954 |
| Ranunculaceae | |
Delphinium hesperium var. recurvatum
| (Greene) K.C. Davis | Minnesota Bot. Stud. 2: 440 | 1900 |
| Ranunculaceae | |
Delphinium hesperium var. seditiosum
| Jeps. | Fl. Calif. 525 | 1914 |