Dieteria asteroides
Dieteria asteroides, the fall tansyaster, is a North American species of plants in the sunflower family. It is native to the southwestern United States and northern Mexico.
Dieteria asteroides is a biennial or perennial herb with a woody taproot. It often grows in a clump of several stems. Ray florets in the flower heads are white or purple, and female. Disc florets are yellow and bisexual.
;VarietiesDieteria asteroides var. asteroides - California, Arizona, Nevada, New Mexico, Chihuahua, SonoraDieteria asteroides var. glandulosa D.R.Morgan & R.L.Hartm. - Arizona, Nevada, New Mexico, UtahDieteria asteroides var. lagunensis D.R.Morgan & R.L.Hartm. Baja California; Laguna Mountains in San Diego County in California