Plants twiggy. Leaf blades 5-10(-23) × 1-2 mm. Peduncles 15-75 mm (heads usually held well beyond foliage). Ray laminae 6-12 × 2-4 mm. Disc corollas 4.5-7 mm. Cypselae 3-4 mm; pappi 3-5.5 mm. 2n = 45.

Flowering spring-fall. Mostly on limestone and derived soils; 200-2200+ m; N.Mex., Tex.; Mexico.