is a small genus of flowering plants in the daisy family
. Plants in this genus may be called bristleweeds
. They are native to the western United States, especially California, and far northern Mexico. They are short, hardy perennials or small leafy shrubs. Some species have sharply toothed leaves. Generally they bear yellow flowers, with some having ray florets
and appearing somewhat daisylike while others have only disc florets. The genus was named after the botanist Barclay Hazard
Some species are in synonymy with genus Haplopappus.