Palafoxia riograndensis
 Palafoxia riograndensis the Río Grande Palafox or Río Grande Spanish needles is a plant species native to Texas Chihuahua and Coahuila. It is named for the Río Grande which separates Texas from Mexico. The plant grows in sandy and silty soils at elevations of 50-200 m (150-700 feet).Palafoxia riograndensis is an annual herb up to 60 cm (24 inches) tall. Flowering heads have no ray flowers but 8-25 pink purple or white disc flowers.