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 5–20(–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.

(10–)20–60 mm.

20–120 mm.

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

hemispheric or broader, 5–6 × 5–8 mm.

usually 7–8, rarely 0;

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

8–13;

laminae golden yellow, 12–25+ mm.

(25–)60–100(–150+);

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

25–50+;

corollas yellowish, 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, 4–5 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 7–10 spreading, spatulate to linear, seldom foliaceous (± fleshy) bractlets 5–10 mm, margins usually ciliate, abaxial faces glabrous or hirtellous.

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

usually 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, 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.

= 22, 24.

= 24.