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Webster 1913 Edition

Noun.

(Bot.)

A genus of ranunculaceous plants (

Delphinium

), having showy flowers, and a spurred calyx. They are natives of the North Temperate zone. The commonest larkspur of the gardens is

Delphinium Consolida

. The flower of the bee larkspur (

Delphinium elatum

) has two petals bearded with yellow hairs, and looks not unlike a bee.

Noun.

A plant of the genus Delphinium.

larkspur ‎(countable and uncountable, plural larkspurs)

Any plant of the genus Delphinium or Consolida
In particular, a tall robust flowering plant with many purplish-blue flowers, Delphinium glaucum.

Delphinium