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 10–40(–60) mm;

blades deltate to lance-ovate overall, 30–80(–150+) × 20–60(–100+) mm, 3(–5)-foliolate, leaflets petiolulate, lanceolate to lance-ovate, (15–)35–60(–120) × (5–)10–20(–30) mm, bases cuneate, margins dentate to serrate, sometimes ciliate, apices acuminate to attenuate, faces glabrous or hirtellous.

(10–)20–60 mm.

10–40(–80+) mm.

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

campanulate to hemispheric or broader, 6–9 × 7–12 mm.

usually 7–8, rarely 0;

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

0 or 1–3+;

laminae golden yellow, 2–3.5 mm.

(25–)60–100(–150+);

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

20–60(–120+);

corollas ± orange, 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).

6–12, oblong or ovate to lance-ovate, 5–9 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 (5–)8(–10) ascending to spreading, spatulate or oblanceolate to linear, sometimes ± foliaceous bractlets or bracts 5–20(–60) mm, margins usually ciliate, abaxial faces glabrous or hirtellous.

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

usually borne singly, sometimes 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 to brown or stramineous, ± obcompressed, obovate to cuneate, outer 5–7 mm, inner 7–10 mm, margins antrorsely or retrorsely barbed, apices ± truncate to concave, faces usually 1-nerved, sometimes tuberculate, glabrous or sparsely hirtellous;

pappi of 2 ± erect to spreading, antrorsely or retrorsely barbed awns 2–5 mm.

= 22, 24.

= 24, 48, 72.