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 5–30 mm;

blades ± deltate to ovate overall, 40–80(–150+) × 25–50(–80+) mm, usually laciniately 1-pinnatisect, ultimate lobes 3(–7), lanceolate to linear, 25–60(–120+) × (3–)6–20(–25) mm, bases cuneate, ultimate margins incised, dentate, or serrate, ciliate, apices acute to attenuate, faces glabrous or hirtellous to scabrellous.

20–30(–80) mm.

10–20(–50) mm.

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

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

0 or 3–6;

laminae yellow, 4–6 mm.

8;

laminae golden yellow, 10–25+ mm.

(5–)12–20(–45);

corollas yellow, 2–3 mm.

(40–)60–100+;

corollas yellow, 2.5–3 mm.

8, lance-linear, 5–7 mm.

6–8+, lance-ovate to lanceolate, 4–7 mm.

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

of 12–21+ spreading to reflexed, linear, seldom foliaceous bractlets (6–)8–12(–20+) mm, margins coarsely ciliate, abaxial faces glabrous or scabrellous.

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

borne singly or in 2s or 3s or 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 to yellowish, ± flattened, obovate or oblanceolate to cuneate, outer 5–7 mm, inner 7–8 mm (lengths mostly 1.5–2.5 widths), margins (± corky-winged) antrorsely barbed or ciliate, apices ± truncate, faces glabrous or strigillose, sometimes tuberculate;

pappi 0, or of 2 divergent, retrorsely barbed awns or ± deltate scales 0.1–0.5(–1.5) mm.

= 24.