Hymenothrix wislizeni
Hymenothrix wislizeni, the Trans-Pecos thimblehead, is a North American species of flowering plant in the daisy family. It grows in northwestern Mexico and the southwestern United States.
Hymenothrix wislizeni is an annual herb up to tall. Each head has 15-30 yellow or cream-colored disc flowers surrounded by 8-12 yellow ray flowers.