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.
Plant: annual; stems stiffly branched from base, > 10 dm Leaves: < 6 cm, alternate, obovate, sessile, 2-pinnately lobed almost to midrib INFLORESCENCE: primary inflorescence a head, each resembling a flower; heads radiate, solitary, < 4 cm diam, peduncled; phyllaries generally in 3 series, obovate, not keeled, margins transparent; receptacle flat to convex or conic, naked Flowers: Ray flowers < 15; ligules yellow; Disk flowers: many; corollas 14-15 mm, yellow; anther tips ovate, bases rounded or ± cordate; style branches truncate with shrub-like tips Fruit: Fruit: ray achenes < 3 mm, 3-angled, winged; disk achenes ± 2.5 mm, angled and ribbed, pappus 0 Misc: Common escape from cultivated in urban coastal areas, vacant lots, roadsides, waste ground; < 200 m.