Hare-foot locoweed growing in mountain big sagebrush steppe of Yellowstone National Park about 8 miles east of Mammoth and to the south of the Grand Loop Road, Park County, Wyoming. In early season condition, hare-foot locoweed is distinguished by a spring flowering habit of tight heads of flowers each with mostly magenta petals, a keel with a distinct beak, a densely whitish sericeous calyx with shorter dark hairs especially towards the calyx lobes, and an acaulescent (stemless) growth habit in with the basal pinnately compound leaves are silky sericeous.