Flora of North America species comparison

petioles 10–30 mm;

blades lanceolate to lance-linear overall, 30–80(–150) × 10–30(–50) mm, usually laciniately pinnatisect, primary lobes 3–7+, 15–60+ × 2–20 mm, bases cuneate, ultimate margins laciniate to serrate, ciliate, apices acuminate, faces glabrous or sparsely scabrellous.

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–)30–80+ mm.

(10–)40–60+ mm.

± hemispheric or broader, 6–8(–12) × 10–15 mm.

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

(5–)8–10+;

laminae yellow, 10–25 mm.

5–6;

laminae yellow, 10–30 mm.

(12–)20–40+;

corollas yellowish, 2–3+ mm.

12–30(–60+);

corollas yellowish, 3–4 mm.

7–8(–13), lance-ovate to lance-linear, 6–8(–12) mm.

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

of 8–12(–16) usually spreading to reflexed, linear, seldom foliaceous bractlets (4–)5–7(–12) mm, margins entire, ciliate, abaxial faces glabrous or ± scabrellous.

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.

in ± corymbiform arrays.

red-brown to blackish, ± flattened (unequally 3–4-angled), broadly cuneate, outer (4–)5–6 mm, inner 5–7 mm (lengths mostly 1.5–2.5 times widths), margins (± corky-winged) patently to antrorsely barbed, apices truncate to concave, faces weakly striate, sometimes tuberculate, glabrous or sparsely strigillose;

pappi 0, or of 2(–4) spreading to divergent, antrorsely or retrorsely barbed awns (0.5–)2–4(–6) mm.

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).