Leaf blades 8-25+ × 4-20 mm, sometimes obscurely 3(-5)-lobed. Cypselae 4-5 × 1.6-2.8 mm, including wings. 2n = 28.

Flowering summer-fall. Limestone, desert scrub; 600-1200[-2400] m; N.Mex., Tex.; Mexico (Chihuahua, Coahuila, Nuevo León, San Luis Potosí, Tamaulipas, Zacatecas).