Spiroseris is a genus of flowering plants in the daisy family. Asteraceae or Compositae, (the aster, daisy, or sunflower family), comprise the largest family of vascular plants. The family has more than 22,750 currently accepted species, spread across 1620 genera, and 12 subfamilies. The largest genera are Senecio (1,500 species), Vernonia (1,000 species), Cousinia (600 species) and Centaurea (600 species).