Species of Delphinium include:^[1][2]

Delphinium alabamicum: Alabama larkspur Delphinium alpestre: Colorado larkspur Delphinium altissimum Delphinium andersonii: Anderson's larkspur Delphinium andesicola: Chiricahua Mountain larkspur Delphinium antoninum: Tracy's larkspur Delphinium arthriscifolium Delphinium bakeri: Baker's delphinium Delphinium barbeyi: subalpine larkspur Delphinium basalticum: basalt larkspur Delphinium bicolor: little larkspur Delphinium brachycentrum: northern larkspur Delphinium brownii Delphinium brunonianum Delphinium bulleyanum Delphinium caeruleum Delphinium californicum: California larkspur Delphinium calthifolium: from Sichuan, China Delphinium cardinale: scarlet larkspur Delphinium carolinianum: Carolina larkspur Delphinium caseyi: Casey's larkspur Delphinium cashmerianum Delphinium caucasicus Delphinium chamissonis: Chamisso's larkspur Delphinium cheilanthum Delphinium consolida Delphinium corymbosum Delphinium decorum: coastal larkspur Delphinium delavayi Delphinium denudatum Delphinium depauperatum: slim larkspur Delphinium dictyocarpum Delphinium distichum: twospike larkspur Delphinium duhmbergii Delphinium elatum: candle larkspur Delphinium exaltatum : tall larkspur Delphinium fissum Delphinium formosum: showy larkspur Delphinium geraniifolium: Clark Valley larkspur Delphinium geyeri: plains larkspur Delphinium glareosum: Olympic larkspur

Delphinium glaucescens: smooth larkspur Delphinium glaucum: Sierra larkspur Delphinium gracile: espuelas de caballero Delphinium gracilentum: pine forest larkspur Delphinium grandiflorum: Siberian larkspur Delphinium gypsophilum: Pinoche Creek larkspur Delphinium hansenii: Eldorado larkspur Delphinium hesperium: foothill larkspur Delphinium hutchinsoniae: Monterey larkspur Delphinium hybridum Delphinium inopinum: unexpected larkspur Delphinium iris Delphinium ithaburense Delphinium leroyi Delphinium leucophaeum Delphinium likiangense Delphinium linarioides Delphinium lineapetalum: thinpetal larkspur Delphinium luteum: yellow larkspur Delphinium maackianum Delphinium macrocentron Delphinium madrense: Sierra Madre larkspur Delphinium menziesii: Menzies' larkspur Delphinium multiplex : Kittitas larkspur Delphinium muscosum Delphinium nelsonii Delphinium newtonianum: Newton's larkspur Delphinium novomexicanum: White Mountain larkspur Delphinium nudicaule: red larkspur Delphinium nuttallianum: twolobe larkspur Delphinium nuttallii: upland larkspur Delphinium occidentale: subalpine larkspur Delphinium oreganum Delphinium oxysepalum Delphinium parishii: desert larkspur Delphinium parryi: San Bernardino larkspur Delphinium patens: zigzag larkspur Delphinium pavonaceum Delphinium peregrinum: violet larkspur Delphinium polycladon: mountain marsh larkspur Delphinium przewalskii

Delphinium purpusii: Kern County larkspur Delphinium pylzowii Delphinium ramosum: mountain larkspur Delphinium recurvatum: Byron larkspur Delphinium robustum: Wahatoya Creek larkspur Delphinium roylei Delphinium sapellonis: Sapello Canyon larkspur Delphinium scaposum: tall mountain larkspur Delphinium scopulorum: Rocky Mountain larkspur Delphinium semibarbatum Delphinium speciosum Delphinium stachydeum: spiked larkspur Delphinium sutchuense Delphinium sutherlandii: Sutherland's larkspur Delphinium tatsienense Delphinium treleasei: glade larkspur Delphinium tricorne: dwarf larkspur Delphinium triste Delphinium trolliifolium: Columbian larkspur Delphinium uliginosum: swamp larkspur Delphinium umbraculorum: umbrella larkspur Delphinium variegatum: royal larkspur Delphinium verdunense Delphinium vestitum Delphinium villosum Delphinium virescens Delphinium viridescens: Wenatchee larkspur Delphinium viride Delphinium wootonii: Organ Mountain larkspur Delphinium xantholeucum: yellow-white larkspur Delphinium yunnanense Delphinium zalil: zalil

Reassigned:

• Delphinium staphisagria = Staphisagria staphisagria