LARK’SPUR, a summer-flowering herb of the buttercup family, which is found in the cool regions of both hemispheres. It receives its name from the odd formation of the flower parts, the upper sepal having a long, curved spur, and the other five being grown together. The petals, too, are irregular in form.
About 100 species have been described, many of which have been cultivated as ornamental plants. The flowers are blue, white or pink.
One species grows in great, profusion in California.
Some species are considered poisonous, cattle and horses being most susceptible, and many cases of larkspur poison have been reported from the Western ranges. Sheep are practically immune.
A species cultivated in Europe, containing several alkaloids, is used for medicinal purposes.