In his travels, Lewis noticed not just one but several species of sagebrush. He wrote, "[O]f this last the A[n]telope is very fond; they feed on it, and perfume the hair of their foreheads and necks with it by rubing against it." Sagebrush ecosystems play an important role for many species, from the pronghorn and elk that use the shrubs as winter forage to the sage grouse that perform their mating dances in gaps between plants. Native Americans use sagebrush, too, as medicine, basket materials, and dye. Overgrazing has altered the composition of some of these communities, as has invasion of non-native weeds like cheatgrass, which burns much more quickly than the native sagebrush.

Not listed.