Leaf blades oblong to obovate, mostly 30-55+ × 15-30+ mm, mostly 2-3-pinnately lobed, ultimate margins dentate. Ray corollas pale yellow, sometimes white-tipped, laminae oblong to linear, 15-25 mm. Ray cypselae triquetrous, 2.5-3 mm, angles ± winged, faces obscurely nerved or ribbed; disc cypselae ± prismatic, ± compressed, 2.5-3 mm, obscurely ribbed, sometimes with adaxial (rarely the abaxial) rib ± winged. 2n = 18.

Flowering Apr-Jul. Disturbed sites; 0-200 m; introduced; Ariz., Calif., Fla.; Eurasia; n Africa.