Contains 2 accepted taxa overall.

Characteristics
Delphinium L.
LARKSPUR; KNIGHT'S SPUR
Classification
RANUNCULALES
Delphinium
Citation
DELPHINIUM Linnaeus, Sp. Pl. 530. 1753, nom. cons.
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TYPE: Delphinium peregrinum Linnaeus 1753, typ. cons.
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Delphinium ajacis DOUBTFUL KNIGHT'S-SPUR; ROCKET LARKSPUR Not Native
Delphinium carolinianum CAROLINA LARKSPUR Native Endangered-State
[Family identification key]
1.  Annuals; petiole of basal leaves 5-15 mm long; pistil 1; petals 2, connate
1.  Perennials; petiole of basal leaves 17-100 mm long; pistils 3(-5); petals 4, distinct
Genus Synonyms
Synonym Full Citation Basionym Type
Aconitella Aconitella Spach, Hist. Nat. Vég. 7: 358. 1839. TYPE: Aconitella delphinioides Spach 1839, nom. illegit. (Delphinium aconiti Linnaeus 1767; Aconitella aconiti (Linnaeus) Soják 1969.)
Aconitopsis Aconitopsis Kemulariya-Nathadze, Trudy Tbilissk. Bot. Inst. 7: 125. 1940. TYPE: Non designatus.
Ceratosanthus Ceratosanthus Schur, Enum. Pl. Transsilv. 30. 1866, non Ceratosanthes Adanson 1763. TYPE: = Consolida (de Candolle) Gray 1821.
Consolida Consolida (de Candolle) Gray, Nat. Arr. Brit. Pl. 2: 711. 1821. BASIONYM: Delphinium Linnaeus, sect. Consolida de Candolle, Syst. Nat. 1: 341. 1817 ("1818"). TYPE: Consolida regalis Gray 1821. (Delphinium consolida Linnaeus 1753.)
Delphinastrum Delphinastrum (de Candolle) Spach, Hist. Nat. Vég. 7: 336. 1839. BASIONYM: Delphinium Linnaeus, sect. Delphinastrum de Candolle, Syst. Nat. 1: 340, 351. 1817. TYPE: Non designatus
Phledinium Phledinium Spach, Hist. Nat. Vég. 7: 351. 1839. TYPE: Phledinium virgatum (Poiret) Spach, nom. illegit. (Delphinium virgatum Poiret, nom. illegit.; Delphinium peregrinum Linnaeus) = Delphinium Linnaeus 1753.
Phtirium Phtirium Rafinesque, Princ. Fond. Somiol. 29. 1814. TYPE: = Delphinium Linnaeus 1753.
Plectrornis Plectrornis Rafinesque ex Lunell, Amer. Midl. Naturalist 4: 361. 1916. TYPE: = Delphinastrum (de Candolle) Spach 1839.
Staphisagria Staphisagria Hill, Brit. Herbal 44. 1756. TYPE: Delphinium staphisagria Linnaeus 1753.