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.

sessile or petioles 5–25 mm (± winged);

blades oblanceolate to linear, 15–40(–100+) × (3–)6–10(–15+) mm, bases cuneate, margins entire or ± serrate, sometimes ciliate, apices rounded or obtuse to attenuate, faces glabrous.

(10–)30–80+ mm.

10–60 mm.

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

usually ± campanulate to cylindric, sometimes ± hemispheric, 5–7(–9) × (4–)7–10 mm.

(5–)8–10+;

laminae yellow, 10–25 mm.

0 or 3–7;

laminae pale yellow, 4–12 mm.

(12–)20–40+;

corollas yellowish, 2–3+ mm.

15–30(–60);

corollas yellow (often orange-tipped), 3–4 mm.

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

6–8(–12), oblong, 6–11 mm (tips usually yellow, as are tips of paleae).

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 2–3(–9) erect, oblanceolate to lance-linear (± foliaceous) bractlets or bracts (6–)10–20(–75+) mm, margins usually ciliolate, abaxial faces glabrous.

in ± corymbiform arrays.

borne singly or in 2s or 3s.

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.

blackish to olive, flattened, narrowly cuneate, outer 4–9 mm, inner 5–10 mm, margins retrorsely barbed, apices ± truncate to convex, faces ± 1-nerved, ± striate, glabrous;

pappi of (2–)3–4 ± erect, retrorsely barbed awns 2–5 mm.