Flora of North America species comparison

(sometimes in 3s or 4s) sessile;

blades obovate or elliptic to lanceolate or linear, (20–)50–100(–160+) × (5–)10–25(–40+) mm, bases cuneate to rounded, margins usually coarsely dentate to serrate, sometimes ciliate, apices acute to acuminate, faces glabrous.

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.

(10–)20–60 mm.

10–20(–50) mm.

turbinate to hemispheric or broader, (4–)6–8(–10+) × 8–12+ mm.

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

usually 7–8, rarely 0;

laminae orange-yellow, (10–)15–25(–30) mm.

8;

laminae golden yellow, 10–25+ mm.

(25–)60–100(–150+);

corollas yellow to orange-yellow, 3–6.5 mm.

(40–)60–100+;

corollas yellow, 2.5–3 mm.

8–12, ovate or obovate to lance-oblong, (4–)6–8(–10+) mm (tips often orange to purplish, as are tips of paleae).

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

of 5–7(–9+) erect or spreading to reflexed, oblanceolate or lanceolate to linear, often foliaceous bractlets or bracts (6–)10–12(–20+) mm, margins usually ciliate, abaxial faces glabrous or bases hispidulous.

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

(erect at flowering, sometimes nodding in fruit) borne singly or in open, ± corymbiform arrays.

borne singly or in 2s or 3s or in open, ± corymbiform arrays.

blackish, red-brown, or stramineous, obcompressed, flattened or unequally 3–4-angled, ± cuneate, outer 6–8 mm, inner 8–10 mm, margins retrorsely ciliate or barbed, apices ± truncate to convex, faces ± 1-nerved, ± striate, glabrous;

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

= 22, 24.

= 24.