Leaf blades 20-50 × 1-2.5 mm. Ray laminae ca. 2 mm. Disc corollas ca. 2 mm. Cypselae 1.5-2 mm; pappi ca. 0.5+ mm. 2n = 36. Flowering mostly late summer, rarely spring. Usually gypseous soils; 700-1900 m; N.Mex., Tex.