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.

sessile or petioles 10–50 mm (winged);

blades lance-elliptic to lance-oblong, 80–120(–250) × 30–100 mm (proximal usually with 1–2 lobes near bases), bases cuneate, margins laciniate to serrate, ciliate, apices acuminate, faces glabrous.

10–60 mm.

(10–)30–70+ mm.

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

± hemispheric or broader, 6–10 × 18–25 mm.

0 or 3–7;

laminae pale yellow, 4–12 mm.

6–11;

laminae yellow, 4–8 mm.

15–30(–60);

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

50–100+;

corollas yellow, 2.5–3.5 mm.

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

13–16+, oblong to lance-ovate, 6–10 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 8–10 usually spreading, lance-linear to lanceolate, sometimes ± foliaceous bractlets or bracts 10–20(–75) mm, margins entire or incised, ciliate, abaxial faces ± hispid at bases.

borne singly or in 2s or 3s.

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.

olivaceous green, ± flattened, unequally 3–4-angled, cuneate, outer 5–6 mm, inner 6–7 mm, margins antrorsely to retrorsely barbed, apices truncate to concave, faces weakly striate, glabrous or sparsely puberulent;

pappi 0, or of (1–)3(–4) suberect, retrorsely barbed awns 2–4 mm.