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 5–40 mm (usually hispido-ciliate);

blades rounded-deltate overall, 15–50+ × 12–40+ mm, 1–2-pinnatisect, ultimate lobes ovate or lanceolate to linear, 3–25+ × (1–)2–3(–15) mm, bases ± cuneate, ultimate margins entire, ciliolate, apices acute to attenuate, faces glabrous or hirtellous.

(10–)30–80+ mm.

(10–)30–80+ mm.

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

± cylindric, 2–3(–4+) × 1.5–2+ mm.

(5–)8–10+;

laminae yellow, 10–25 mm.

0 or 2–3;

laminae yellowish or whitish, 1–3 mm.

(12–)20–40+;

corollas yellowish, 2–3+ mm.

5–13;

corollas yellowish to whitish, 1.5–2 mm.

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

4–5(–7), oblong to lanceolate, (2–)3–4+ mm.

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 3–4(–6) ± appressed, subulate to filiform bractlets 1–3 mm, margins ciliolate, abaxial faces usually glabrous.

in ± corymbiform arrays.

usually borne singly, sometimes in open, ± 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.

outer red-brown, flat or unequally 4-angled, linear, 6–8 mm, margins not ciliate, apices somewhat attenuate, faces obscurely 2-grooved, antrorsely hispidulous toward tips;

inner similar, blackish (sometimes with pale tips), ± equally 4-angled, linear-fusiform, 9–14 mm, margins not ciliate, apices attenuate, faces 2-grooved, antrorsely hispidulous (at least distally);

pappi of 2(–3), erect, retrorsely barbed awns 1–3 mm.