Flora of North America species comparison

sessile or petioles (± winged) 5–15(–35+) mm;

blades ± elliptic to lanceolate, (20–)40–100(–200+) × 10–30(–70) mm, sometimes laciniately 1-pinnatisect with 1–4+ lobes near bases, bases cuneate, margins entire or dentate to serrate, usually ciliate, apices attenuate, faces glabrous or hirtellous.

petioles 20–50 mm;

blades rounded-deltate to ovate or lanceolate overall, (20–)30–70+ × (20–)30–60+ mm, (1–)2(–3)-pinnatisect, ultimate lobes obovate or lanceolate, 15–45+ × 10–25+ mm, bases truncate to cuneate, ultimate margins entire, sometimes ciliolate, apices rounded to acute or attenuate, faces usually glabrous, sometimes hirtellous.

10–35(–80) mm.

(10–)20–50(–100) mm.

campanulate to hemispheric or broader, (4–)6–12 × (3–)6–9(–15+) mm.

± campanulate, 5–7 × 3–4(–5) mm.

usually 0, sometimes 1–5+;

laminae yellowish, 4–8 mm.

0 or 3–5+;

laminae yellowish or whitish, 1–2(–3) mm.

(5–)20–40(–60+);

corollas pale yellow to orange, 2–3 mm (± abruptly ampliate, anthers usually dark, blackish).

10–20(–30+);

corollas yellowish to whitish, 2–3 mm.

(6–)8(–9), elliptic to oblong or ovate, (4–)5–6(–12) mm.

8–12, lanceolate to linear, 4–6 mm.

of 2–6+ spreading or ascending, lanceolate, linear, oblanceolate, oblong, or spatulate, ± foliaceous bractlets or bracts 10–25(–35+) mm, margins (entire or serrate) usually ciliate, abaxial faces hispidulous near bases, distally glabrous.

of (7–)8(–10) linear bractlets 3–5 mm, ± appressed, margins ciliate, abaxial faces usually glabrous.

borne singly or in 2s or 3s.

usually borne singly, sometimes in ± corymbiform arrays.

blackish to purplish or brown, usually (at least inner) ± 4-angled, usually cuneate to linear, sometimes ± obpyramidal, outer (3–)4–7 mm, inner (4–)5–8 mm, margins proximally antrorsely to patently, distally retrorsely, barbed, apices ± truncate to concave, faces usually strongly 1-nerved, usually tuberculate, glabrous or setulose;

pappi 0, or of (1–)2–4(–6), ± erect to spreading, antrorsely or retrorsely barbed awns (0.2–)2–5 mm.

red-brown, outer weakly obcompressed, 7–15 mm, inner ± 4-angled, linear to linear-fusiform, 12–18 mm, margins not ciliate, apices ± attenuate, faces 2-grooved, often tuberculate-hispidulous;

pappi of (2–)3–4, erect to divergent, retrorsely barbed awns 2–4 mm.

= 48.

= 24, 72.