The flowers of this species are quite attractive; how unfortunate that it isn't more common! The only other larkspur that is native to Illinois, Delphinium tricorne (Dwarf Larkspur), is found primarily in woodlands in the southern half of the state. This latter species has shorter flowering stalks and leaves with wider lobes (exceeding ¼" across); furthermore, its seed capsules are widely spreading, rather than erect. An annual species from Europe that is grown in gardens, Consolida ajacis (Rocket Larkspur), occasionally escapes into waste areas. This species has leaves with lobes that are nearly filiform (worm-like) and it has only one seed capsule per flower. In contrast, each flower of Wild Larkspur matures into clusters of 3 seed capsules. The typical subspecies of Wild Larkspur, Delphinium carolinianum carolinianum, has been described above. The other subspecies that has been found in Illinois, Delphinium carolinianum virescens (Prairie Larkspur), differs from the typical subspecies as follows
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