Flora of North America species comparison

petioles 5–40 mm;

blades rounded-deltate to ovate overall, 20–50+ × 15–35+ mm, (1–)2–3-pinnatisect, ultimate lobes ± linear, (2–)5–15+ × (0.5–)2–3+ mm, bases ± cuneate, ultimate margins entire, sometimes ciliolate, apices acute to attenuate, faces usually glabrous, sometimes hispidulous.

petioles 5–20(–30+) mm;

blades ± deltate to ovate or lanceolate overall, 30–100 × 10–50+ mm, usually laciniately 1-pinnatisect, ultimate lobes 3(–7), ovate or lanceolate to linear, (5–)25–60(–70+) × (1–)5–10(–12+) mm, bases cuneate, ultimate margins serrate or entire, often ciliolate, apices acute to attenuate, faces glabrous or hirtellous.

20–30(–80) mm.

20–120 mm.

campanulate to hemispheric or broader, (5–)6–7 × 4–8 mm.

hemispheric or broader, 5–6 × 5–8 mm.

0 or 3–6;

laminae yellow, 4–6 mm.

8–13;

laminae golden yellow, 12–25+ mm.

(5–)12–20(–45);

corollas yellow, 2–3 mm.

25–50+;

corollas yellowish, 2.5–3 mm.

8, lance-linear, 5–7 mm.

(6–)8+, lance-ovate to lanceolate, 4–5 mm.

of 6–12 ± appressed, linear bractlets 5–7 mm, margins scabro-ciliate, abaxial faces usually pilosulous to hirsutulous, rarely glabrous.

of 7–10 spreading, spatulate to linear, seldom foliaceous (± fleshy) bractlets 5–10 mm, margins usually ciliate, abaxial faces glabrous or hirtellous.

usually borne singly, sometimes in 2s or 3s.

usually in open, ± corymbiform arrays.

outer red-brown, flat or weakly 4-angled, linear, 6–8 mm, margins not ciliate, apices somewhat attenuate, faces obscurely 2-grooved, often tuberculate, glabrous or ± strigillose;

inner similar, blackish (sometimes with pale tips), ± equally 4-angled, linear-fusiform, 8–15 mm, margins not ciliate, apices attenuate, faces 2-grooved, glabrous or, toward tips, strigillose;

pappi of 2(–3), spreading to divergent, retrorsely barbed awns (1–)1.5–3 mm.

blackish or brown, flattened or unequally (3–)4-angled, broadly cuneate, outer 2.5–4, inner 3.5–5 mm (lengths mostly 1.5–2.5 times widths), margins not barbed or ciliate, apices ± truncate, faces sometimes obscurely 1-nerved, sometimes tuberculate, glabrous or hirtellous;

pappi 0, or of 2 erect, antrorsely barbed awns or ± deltate scales 0.5(–1) mm.

= 24.