Delphinium hesperium subsp. cuyamacae Delphinium hesperium subsp. pallescens
Delphinium foliosum Delphinium hesperium var. hesperium Delphinium hesperium subsp. hesperium Delphinium hesperium f. hirsutum
World Flora Online, http://www.worldfloraonline.org/, accessed June 20, 2024