Haplopappus Spinulosus is a species of flowering plant native to the western United States. It is commonly referred to by various other names, depending on the region in which it is found. Some synonyms for Haplopappus Spinulosus include spiny goldenweed, spiny hawksbeard, spiny-leaved hawksbeard, and serrate-leaved goldenweed. These names are all descriptive of the plant's physical features, which include spiny leaves and yellow flowers. Haplopappus Spinulosus is an important food source for birds and insects, as well as a medicinal plant used by some indigenous cultures. Despite its many synonyms, this plant is a unique and fascinating species with a crucial role in its ecosystem.