About Delphinium nuttallianum Pritz. ex Walp.
Delphinium nuttallianum Pritz. ex Walp. is a species of larkspur that has the common names two-lobe larkspur, upland larkspur, common larkspur, and Nuttall's larkspur; the name Nuttall's larkspur is also shared with Delphinium nuttallii. It is widely distributed across western North America from California to Alberta, growing in mountain meadows and most of the sagebrush steppe, excluding only very dry areas. Its roots vary from thin to thick. This plant has an erect white to pink stem that usually does not exceed half a meter in height, and the stem may branch several times. Deeply lobed leaves are mostly found near the base of the plant. The inflorescence at the top of the stem holds a few widely spaced flowers on long pedicels. The sepals are long and either curl backwards or fold upon themselves, and they can be purple, blue, or almost white. The lower petals match the sepal color, while the upper petals are often white. The flower spur is one or two centimeters long. The upper portion of the plant is often hairy. This species is very poisonous to livestock, especially cattle.
