This is the most common species, with a sterile violet-colored flower that blooms in the spring. There are no leaves on the flower stalk. The heart-shaped, shallow-toothed leaves arise separately from the ground. They're good to eat in springtime, but become tough and coarse in the summer.
Poisonous dwarf larkspur (Delphinium tricorne) has a similar violet flower, but with a "spur" behind the flower, and a different leaf. Monkshood (Aconitum uncinatum), also poisonous, has a large, helmet-like upper sepal that covers 2 petals.