Flora of North America species comparison

sessile or petioles 5–25 mm (± winged);

blades oblanceolate to linear, 15–40(–100+) × (3–)6–10(–15+) mm, bases cuneate, margins entire or ± serrate, sometimes ciliate, apices rounded or obtuse to attenuate, faces glabrous.

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.

10–60 mm.

(10–)20–50(–100) mm.

usually ± campanulate to cylindric, sometimes ± hemispheric, 5–7(–9) × (4–)7–10 mm.

± campanulate, 5–7 × 3–4(–5) mm.

0 or 3–7;

laminae pale yellow, 4–12 mm.

0 or 3–5+;

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

15–30(–60);

corollas yellow (often orange-tipped), 3–4 mm.

10–20(–30+);

corollas yellowish to whitish, 2–3 mm.

6–8(–12), oblong, 6–11 mm (tips usually yellow, as are tips of paleae).

8–12, lanceolate to linear, 4–6 mm.

of 2–3(–9) erect, oblanceolate to lance-linear (± foliaceous) bractlets or bracts (6–)10–20(–75+) mm, margins usually ciliolate, abaxial faces 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 olive, flattened, narrowly cuneate, outer 4–9 mm, inner 5–10 mm, margins retrorsely barbed, apices ± truncate to convex, faces ± 1-nerved, ± striate, glabrous;

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

= 24, 72.