Flora of North America species comparison

petioles 20–40 mm;

blades deltate or lanceolate to lance-linear overall, (30–)50–120(–220) × 10–50(–150) mm, sometimes either 1-pinnately lobed, primary lobes 3–5+, lanceolate to lance-linear, 30–120 × 3–25+ mm, or 2-pinnatisect, ultimate lobes linear, 5–30 × 1–2+ mm, bases truncate to cuneate, ultimate margins entire or serrate, seldom ciliate, apices obtuse to acuminate, faces glabrous or puberulent.

(10–)40–60+ mm.

campanulate to hemispheric, 4–6 × 5–10 mm.

5–6;

laminae yellow, 10–30 mm.

12–30(–60+);

corollas yellowish, 3–4 mm.

8–12, ovate to lanceolate, 4–5(–7) mm (margins usually yellow).

of 8–12(–17) usually erect, linear, seldom foliaceous bractlets 3–6 mm, margins ciliate, abaxial faces usually glabrous, sometimes hispidulous at bases.

in ± corymbiform arrays.

dark brown to blackish, ± flattened, sometimes unequally 3–4-angled, ± linear, outer 4–6 mm, inner 5–7 mm, margins not barbed or ciliate, apices truncate, faces weakly 2-grooved, glabrous or sparsely strigillose, sometimes tuberculate;

pappi 0, or of (1–)2(–4) erect to spreading, retrorsely barbed awns (1–)1.5–4 mm.

= 24 (Mexico).