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 10–20 mm;

blades either oblanceolate to linear, 5–15+ × 1–2+ mm, or rounded-deltate overall, 10–25(–60+) × 15–25+ mm, (1–)2–3-pinnatisect, ultimate lobes oblanceolate to spatulate or linear, 5–15+ × 0.5–5 mm, bases ± cuneate, ultimate margins entire, sometimes ciliolate, apices obtuse to acute, faces glabrous.

(10–)30–80+ mm.

10–20(–90) mm.

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

± campanulate to cylindric, 2–3(–8) × 2(–3)[–4] mm.

(5–)8–10+;

laminae yellow, 10–25 mm.

0 or 1(–3+);

laminae whitish, 1–1.5(–3+) mm.

(12–)20–40+;

corollas yellowish, 2–3+ mm.

(3–)5–9;

corollas whitish to yellowish, 2–2.5 mm.

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

(3–)5, oblong to lanceolate orlinear, (2–)3–8 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 (1–)3–4 appressed to spreading, spatulate to linear bractlets or bracts 3–10(–25+) mm (sometimes foliaceous: pinnate, lobes 3–5+, linear), margins ciliolate, abaxial faces usually glabrous, sometimes sparsely hispidulous.

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 (sometimes with lighter blotches), ± equally 4-angled, linear-fusiform, 5–6(–8) mm, margins not ciliate, apices ± attenuate, faces 2-grooved, usually glabrous;

inner similar, 10–14 mm;

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