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 5–40 mm (usually hispido-ciliate);

blades rounded-deltate overall, 15–50+ × 12–40+ mm, 1–2-pinnatisect, ultimate lobes ovate or lanceolate to linear, 3–25+ × (1–)2–3(–15) mm, bases ± cuneate, ultimate margins entire, ciliolate, apices acute to attenuate, faces glabrous or hirtellous.

10–35(–80) mm.

(10–)30–80+ mm.

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

± cylindric, 2–3(–4+) × 1.5–2+ mm.

usually 0, sometimes 1–5+;

laminae yellowish, 4–8 mm.

0 or 2–3;

laminae yellowish or whitish, 1–3 mm.

(5–)20–40(–60+);

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

5–13;

corollas yellowish to whitish, 1.5–2 mm.

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

4–5(–7), oblong to lanceolate, (2–)3–4+ 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 3–4(–6) ± appressed, subulate to filiform bractlets 1–3 mm, margins ciliolate, abaxial faces usually glabrous.

borne singly or in 2s or 3s.

usually borne singly, sometimes in open, ± 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.

outer red-brown, flat or unequally 4-angled, linear, 6–8 mm, margins not ciliate, apices somewhat attenuate, faces obscurely 2-grooved, antrorsely hispidulous toward tips;

inner similar, blackish (sometimes with pale tips), ± equally 4-angled, linear-fusiform, 9–14 mm, margins not ciliate, apices attenuate, faces 2-grooved, antrorsely hispidulous (at least distally);

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

= 48.