Proc. Amer. Acad. Arts 8: 634. 1873
Species 2 (2 in the flora).
Acamptopappus is essentially endemic to the Mojave Desert of California, Arizona, Nevada, and Utah. The genus is recognized as low, white-barked, desert shrubs with pedunculate heads, borne singly or in loose, corymbiform arrays, with ovate phyllaries with broad hyaline margins, 0 or 5–14 yellow rays, sericeous to villous cypselae, and thick pappus scales.